629555889855 has 32 divisors (see below), whose sum is σ = 1023425568000. Its totient is φ = 330395231232.

The previous prime is 629555889847. The next prime is 629555889871. The reversal of 629555889855 is 558988555926.

629555889855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 629555889855 - 2³ = 629555889847 is a prime.

It is a super-2 number, since 2×629555889855² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596496 + ... + 1270794.

It is an arithmetic number, because the mean of its divisors is an integer number (31982049000).

Almost surely, 2^629555889855 is an apocalyptic number.

629555889855 is a deficient number, since it is larger than the sum of its proper divisors (393869678145).

629555889855 is a wasteful number, since it uses less digits than its factorization.

629555889855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675303.

The product of its digits is 1555200000, while the sum is 75.

The spelling of 629555889855 in words is "six hundred twenty-nine billion, five hundred fifty-five million, eight hundred eighty-nine thousand, eight hundred fifty-five".