61699340931507 has 32 divisors (see below), whose sum is σ = 96786339370560. Its totient is φ = 38712088166400.

The previous prime is 61699340931451. The next prime is 61699340931517. The reversal of 61699340931507 is 70513904399616.

61699340931507 is a `hidden beast` number, since 6 + 1 + 6 + 9 + 9 + 34 + 0 + 93 + 1 + 507 = 666.

It is not a de Polignac number, because 61699340931507 - 2¹⁴ = 61699340915123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61699340931517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12521007 + ... + 16738407.

It is an arithmetic number, because the mean of its divisors is an integer number (3024573105330).

Almost surely, 2^{61699340931507} is an apocalyptic number.

61699340931507 is a deficient number, since it is larger than the sum of its proper divisors (35086998439053).

61699340931507 is a wasteful number, since it uses less digits than its factorization.

61699340931507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249300 (or 4249294 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 63.

The spelling of 61699340931507 in words is "sixty-one trillion, six hundred ninety-nine billion, three hundred forty million, nine hundred thirty-one thousand, five hundred seven".