85402538715 has 64 divisors (see below), whose sum is σ = 151028551296. Its totient is φ = 40949256192.

The previous prime is 85402538701. The next prime is 85402538729. The reversal of 85402538715 is 51783520458.

It is an interprime number because it is at equal distance from previous prime (85402538701) and next prime (85402538729).

It is not a de Polignac number, because 85402538715 - 2⁶ = 85402538651 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1385737 + ... + 1446053.

It is an arithmetic number, because the mean of its divisors is an integer number (2359821114).

Almost surely, 2^85402538715 is an apocalyptic number.

85402538715 is a deficient number, since it is larger than the sum of its proper divisors (65626012581).

85402538715 is a wasteful number, since it uses less digits than its factorization.

85402538715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60528.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 85402538715 in words is "eighty-five billion, four hundred two million, five hundred thirty-eight thousand, seven hundred fifteen".