85290678550 has 48 divisors (see below), whose sum is σ = 197785769472. Its totient is φ = 26584106400.

The previous prime is 85290678547. The next prime is 85290678553. The reversal of 85290678550 is 5587609258.

It is an interprime number because it is at equal distance from previous prime (85290678547) and next prime (85290678553).

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 85290678491 and 85290678500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85290678553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11072862 + ... + 11080561.

It is an arithmetic number, because the mean of its divisors is an integer number (4120536864).

Almost surely, 2^85290678550 is an apocalyptic number.

85290678550 is an abundant number, since it is smaller than the sum of its proper divisors (112495090922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85290678550 is a wasteful number, since it uses less digits than its factorization.

85290678550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22153453 (or 22153448 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 85290678550 in words is "eighty-five billion, two hundred ninety million, six hundred seventy-eight thousand, five hundred fifty".