36661158479220 has 1152 divisors, whose sum is σ = 124396248130560. Its totient is φ = 8037008179200.

The previous prime is 36661158479191. The next prime is 36661158479249. The reversal of 36661158479220 is 2297485116663.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (36661158479191) and next prime (36661158479249).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 33541772994 + ... + 33541774086.

It is an arithmetic number, because the mean of its divisors is an integer number (107982854280).

It is a 2-persistent number, because it is pandigital, and so is 2⋅36661158479220 = 73322316958440, but 3⋅36661158479220 = 109983475437660 is not.

Almost surely, 2^{36661158479220} is an apocalyptic number.

36661158479220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36661158479220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62198124065280).

36661158479220 is an abundant number, since it is smaller than the sum of its proper divisors (87735089651340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36661158479220 is a wasteful number, since it uses less digits than its factorization.

36661158479220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1324 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 36661158479220 in words is "thirty-six trillion, six hundred sixty-one billion, one hundred fifty-eight million, four hundred seventy-nine thousand, two hundred twenty".