61070657320 has 64 divisors (see below), whose sum is σ = 137788212240. Its totient is φ = 24360960000.

The previous prime is 61070657311. The next prime is 61070657327. The reversal of 61070657320 is 2375607016.

It can be written as a sum of positive squares in 8 ways, for example, as 44766942724 + 16303714596 = 211582^2 + 127686^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61070657320.

It is not an unprimeable number, because it can be changed into a prime (61070657327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38144520 + ... + 38146120.

Almost surely, 2^61070657320 is an apocalyptic number.

It is an amenable number.

61070657320 is an abundant number, since it is smaller than the sum of its proper divisors (76717554920).

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

61070657320 is a wasteful number, since it uses less digits than its factorization.

61070657320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646 (or 3642 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 61070657320 in words is "sixty-one billion, seventy million, six hundred fifty-seven thousand, three hundred twenty".