61032821973 has 24 divisors (see below), whose sum is σ = 84115972512. Its totient is φ = 39334935744.

The previous prime is 61032821957. The next prime is 61032821977. The reversal of 61032821973 is 37912823016.

It is not a de Polignac number, because 61032821973 - 2⁴ = 61032821957 is a prime.

It is a super-2 number, since 2×61032821973² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61032821977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2724886 + ... + 2747192.

It is an arithmetic number, because the mean of its divisors is an integer number (3504832188).

Almost surely, 2^61032821973 is an apocalyptic number.

It is an amenable number.

61032821973 is a deficient number, since it is larger than the sum of its proper divisors (23083150539).

61032821973 is a wasteful number, since it uses less digits than its factorization.

61032821973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22661 (or 22504 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 61032821973 in words is "sixty-one billion, thirty-two million, eight hundred twenty-one thousand, nine hundred seventy-three".