70860031781 has 16 divisors (see below), whose sum is σ = 92186062848. Its totient is φ = 52814929200.

The previous prime is 70860031777. The next prime is 70860031789. The reversal of 70860031781 is 18713006807.

It is not a de Polignac number, because 70860031781 - 2² = 70860031777 is a prime.

It is a super-2 number, since 2×70860031781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70860031789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20003885 + ... + 20007426.

It is an arithmetic number, because the mean of its divisors is an integer number (5761628928).

Almost surely, 2^70860031781 is an apocalyptic number.

It is an amenable number.

70860031781 is a deficient number, since it is larger than the sum of its proper divisors (21326031067).

70860031781 is a wasteful number, since it uses less digits than its factorization.

70860031781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40011352.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 70860031781 in words is "seventy billion, eight hundred sixty million, thirty-one thousand, seven hundred eighty-one".