61945695537 has 48 divisors (see below), whose sum is σ = 92538378240. Its totient is φ = 36820919520.

The previous prime is 61945695503. The next prime is 61945695541. The reversal of 61945695537 is 73559654916.

It is not a de Polignac number, because 61945695537 - 2⁸ = 61945695281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61945690537) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9912948 + ... + 9919194.

It is an arithmetic number, because the mean of its divisors is an integer number (1927882880).

Almost surely, 2^61945695537 is an apocalyptic number.

It is an amenable number.

61945695537 is a deficient number, since it is larger than the sum of its proper divisors (30592682703).

61945695537 is a wasteful number, since it uses less digits than its factorization.

61945695537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6794 (or 6783 counting only the distinct ones).

The product of its digits is 30618000, while the sum is 60.

The spelling of 61945695537 in words is "sixty-one billion, nine hundred forty-five million, six hundred ninety-five thousand, five hundred thirty-seven".