105278451564 has 96 divisors (see below), whose sum is σ = 305571764736. Its totient is φ = 27716244480.

The previous prime is 105278451559. The next prime is 105278451611. The reversal of 105278451564 is 465154872501.

It is a happy number.

It is a super-2 number, since 2×105278451564² (a number of 23 digits) contains 22 as substring.

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, 1775272 + ... + 1833615.

It is an arithmetic number, because the mean of its divisors is an integer number (3183039216).

Almost surely, 2^105278451564 is an apocalyptic number.

It is an amenable number.

105278451564 is an abundant number, since it is smaller than the sum of its proper divisors (200293313172).

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

105278451564 is a wasteful number, since it uses less digits than its factorization.

105278451564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608935 (or 3608933 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 105278451564 in words is "one hundred five billion, two hundred seventy-eight million, four hundred fifty-one thousand, five hundred sixty-four".