61279831701 has 12 divisors (see below), whose sum is σ = 96562159200. Its totient is φ = 37139291880.

The previous prime is 61279831603. The next prime is 61279831709. The reversal of 61279831701 is 10713897216.

61279831701 is a `hidden beast` number, since 61 + 279 + 8 + 317 + 0 + 1 = 666.

It is not a de Polignac number, because 61279831701 - 2²¹ = 61277734549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61279831709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309494001 + ... + 309494198.

It is an arithmetic number, because the mean of its divisors is an integer number (8046846600).

Almost surely, 2^61279831701 is an apocalyptic number.

It is an amenable number.

61279831701 is a deficient number, since it is larger than the sum of its proper divisors (35282327499).

61279831701 is a wasteful number, since it uses less digits than its factorization.

61279831701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618988216 (or 618988213 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 61279831701 in words is "sixty-one billion, two hundred seventy-nine million, eight hundred thirty-one thousand, seven hundred one".