37661073120 has 672 divisors, whose sum is σ = 147248085600. Its totient is φ = 9022648320.

The previous prime is 37661073077. The next prime is 37661073139. The reversal of 37661073120 is 2137016673.

37661073120 is a `hidden beast` number, since 3 + 7 + 6 + 610 + 7 + 31 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 191172862 + ... + 191173058.

It is an arithmetic number, because the mean of its divisors is an integer number (219119175).

Almost surely, 2^37661073120 is an apocalyptic number.

37661073120 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 37661073120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73624042800).

37661073120 is an abundant number, since it is smaller than the sum of its proper divisors (109587012480).

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

37661073120 is a wasteful number, since it uses less digits than its factorization.

37661073120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

Adding to 37661073120 its reverse (2137016673), we get a palindrome (39798089793).

The spelling of 37661073120 in words is "thirty-seven billion, six hundred sixty-one million, seventy-three thousand, one hundred twenty".