61072620690 has 32 divisors (see below), whose sum is σ = 150535759680. Its totient is φ = 15845868864.

The previous prime is 61072620611. The next prime is 61072620701. The reversal of 61072620690 is 9602627016.

It is a super-2 number, since 2×61072620690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27509080 + ... + 27511299.

It is an arithmetic number, because the mean of its divisors is an integer number (4704242490).

Almost surely, 2^61072620690 is an apocalyptic number.

61072620690 is an abundant number, since it is smaller than the sum of its proper divisors (89463138990).

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

61072620690 is a wasteful number, since it uses less digits than its factorization.

61072620690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55020426.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 61072620690 in words is "sixty-one billion, seventy-two million, six hundred twenty thousand, six hundred ninety".