68161077470 has 32 divisors (see below), whose sum is σ = 130916472480. Its totient is φ = 25475627520.

The previous prime is 68161077469. The next prime is 68161077487. The reversal of 68161077470 is 7477016186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2443271 + ... + 2471010.

It is an arithmetic number, because the mean of its divisors is an integer number (4091139765).

Almost surely, 2^68161077470 is an apocalyptic number.

68161077470 is a deficient number, since it is larger than the sum of its proper divisors (62755395010).

68161077470 is a wasteful number, since it uses less digits than its factorization.

68161077470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914380.

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 68161077470 in words is "sixty-eight billion, one hundred sixty-one million, seventy-seven thousand, four hundred seventy".