855400008624 has 80 divisors (see below), whose sum is σ = 2593722586368. Its totient is φ = 237794593536.

The previous prime is 855400008581. The next prime is 855400008637. The reversal of 855400008624 is 426800004558.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34390722 + ... + 34415585.

Almost surely, 2^855400008624 is an apocalyptic number.

855400008624 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

855400008624 is an abundant number, since it is smaller than the sum of its proper divisors (1738322577744).

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

855400008624 is a wasteful number, since it uses less digits than its factorization.

855400008624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68806362 (or 68806356 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The spelling of 855400008624 in words is "eight hundred fifty-five billion, four hundred million, eight thousand, six hundred twenty-four".