78137258554 has 32 divisors (see below), whose sum is σ = 124325591040. Its totient is φ = 36765590400.

The previous prime is 78137258533. The next prime is 78137258581. The reversal of 78137258554 is 45585273187.

It is a happy number.

It is a super-2 number, since 2×78137258554² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78137258495 and 78137258504.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2512359 + ... + 2543269.

It is an arithmetic number, because the mean of its divisors is an integer number (3885174720).

Almost surely, 2^78137258554 is an apocalyptic number.

78137258554 is a deficient number, since it is larger than the sum of its proper divisors (46188332486).

78137258554 is a wasteful number, since it uses less digits than its factorization.

78137258554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32046.

The product of its digits is 9408000, while the sum is 55.

The spelling of 78137258554 in words is "seventy-eight billion, one hundred thirty-seven million, two hundred fifty-eight thousand, five hundred fifty-four".