68177479217031 has 32 divisors (see below), whose sum is σ = 107653311014400. Its totient is φ = 42494727945600.

The previous prime is 68177479216961. The next prime is 68177479217033. The reversal of 68177479217031 is 13071297477186.

It is a happy number.

68177479217031 is a `hidden beast` number, since 6 + 8 + 1 + 77 + 479 + 21 + 70 + 3 + 1 = 666.

It is not a de Polignac number, because 68177479217031 - 2¹⁷ = 68177479085959 is a prime.

It is a super-2 number, since 2×68177479217031² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68177479217031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68177479217033) 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, 491767821 + ... + 491906438.

It is an arithmetic number, because the mean of its divisors is an integer number (3364165969200).

Almost surely, 2^{68177479217031} is an apocalyptic number.

68177479217031 is a deficient number, since it is larger than the sum of its proper divisors (39475831797369).

68177479217031 is a wasteful number, since it uses less digits than its factorization.

68177479217031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983674436 (or 983674430 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 63.

The spelling of 68177479217031 in words is "sixty-eight trillion, one hundred seventy-seven billion, four hundred seventy-nine million, two hundred seventeen thousand, thirty-one".