85465781264 has 40 divisors (see below), whose sum is σ = 168864629472. Its totient is φ = 41895676160.

The previous prime is 85465781257. The next prime is 85465781267. The reversal of 85465781264 is 46218756458.

It is not an unprimeable number, because it can be changed into a prime (85465781267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71669 + ... + 419604.

Almost surely, 2^85465781264 is an apocalyptic number.

It is an amenable number.

85465781264 is a deficient number, since it is larger than the sum of its proper divisors (83398848208).

85465781264 is a wasteful number, since it uses less digits than its factorization.

85465781264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491495 (or 491489 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 56.

The spelling of 85465781264 in words is "eighty-five billion, four hundred sixty-five million, seven hundred eighty-one thousand, two hundred sixty-four".