37661990970 has 64 divisors (see below), whose sum is σ = 92645130240. Its totient is φ = 9795175488.

The previous prime is 37661990957. The next prime is 37661990981. The reversal of 37661990970 is 7909916673.

It is a self number, because there is not a number n which added to its sum of digits gives 37661990970.

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, 141019 + ... + 308561.

It is an arithmetic number, because the mean of its divisors is an integer number (1447580160).

Almost surely, 2^37661990970 is an apocalyptic number.

37661990970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 37661990970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46322565120).

37661990970 is an abundant number, since it is smaller than the sum of its proper divisors (54983139270).

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

37661990970 is a wasteful number, since it uses less digits than its factorization.

37661990970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167739.

The product of its (nonzero) digits is 3857868, while the sum is 57.

The spelling of 37661990970 in words is "thirty-seven billion, six hundred sixty-one million, nine hundred ninety thousand, nine hundred seventy".