61410699321929 has 4 divisors (see below), whose sum is σ = 61436361965076. Its totient is φ = 61385036678784.

The previous prime is 61410699321913. The next prime is 61410699321949. The reversal of 61410699321929 is 92912399601416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29149719306304 + 32260980015625 = 5399048^2 + 5679875^2 .

It is a cyclic number.

It is not a de Polignac number, because 61410699321929 - 2⁴ = 61410699321913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61410699321949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12831317984 + ... + 12831322769.

It is an arithmetic number, because the mean of its divisors is an integer number (15359090491269).

Almost surely, 2^{61410699321929} is an apocalyptic number.

It is an amenable number.

61410699321929 is a deficient number, since it is larger than the sum of its proper divisors (25662643147).

61410699321929 is a wasteful number, since it uses less digits than its factorization.

61410699321929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25662643146.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The spelling of 61410699321929 in words is "sixty-one trillion, four hundred ten billion, six hundred ninety-nine million, three hundred twenty-one thousand, nine hundred twenty-nine".