85470000777 has 72 divisors (see below), whose sum is σ = 145402036416. Its totient is φ = 47391537024.

The previous prime is 85470000757. The next prime is 85470000787. The reversal of 85470000777 is 77700007458.

It is a happy number.

It is not a de Polignac number, because 85470000777 - 2¹⁹ = 85469476489 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85470000757) 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 71 ways as a sum of consecutive naturals, for example, 38206303 + ... + 38208539.

It is an arithmetic number, because the mean of its divisors is an integer number (2019472728).

Almost surely, 2^85470000777 is an apocalyptic number.

It is an amenable number.

85470000777 is a deficient number, since it is larger than the sum of its proper divisors (59932035639).

85470000777 is a wasteful number, since it uses less digits than its factorization.

85470000777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 45.

The spelling of 85470000777 in words is "eighty-five billion, four hundred seventy million, seven hundred seventy-seven", and thus it is an aban number.