36661263240 has 128 divisors (see below), whose sum is σ = 125750338560. Its totient is φ = 8376079104.

The previous prime is 36661263209. The next prime is 36661263253. The reversal of 36661263240 is 4236216663.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2245587 + ... + 2261853.

It is an arithmetic number, because the mean of its divisors is an integer number (982424520).

Almost surely, 2^36661263240 is an apocalyptic number.

36661263240 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 36661263240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62875169280).

36661263240 is an abundant number, since it is smaller than the sum of its proper divisors (89089075320).

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

36661263240 is a wasteful number, since it uses less digits than its factorization.

36661263240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18971 (or 18967 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 36661263240 in words is "thirty-six billion, six hundred sixty-one million, two hundred sixty-three thousand, two hundred forty".