61575502616051 has 4 divisors (see below), whose sum is σ = 61715765720400. Its totient is φ = 61435239511704.

The previous prime is 61575502616027. The next prime is 61575502616057. The reversal of 61575502616051 is 15061620557516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61575502616051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61575502616057) 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, 70131551516 + ... + 70131552393.

It is an arithmetic number, because the mean of its divisors is an integer number (15428941430100).

Almost surely, 2^{61575502616051} is an apocalyptic number.

61575502616051 is a deficient number, since it is larger than the sum of its proper divisors (140263104349).

61575502616051 is a wasteful number, since it uses less digits than its factorization.

61575502616051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140263104348.

The product of its (nonzero) digits is 1890000, while the sum is 50.

The spelling of 61575502616051 in words is "sixty-one trillion, five hundred seventy-five billion, five hundred two million, six hundred sixteen thousand, fifty-one".