78837520454 has 32 divisors (see below), whose sum is σ = 147474404352. Its totient is φ = 30708000000.

The previous prime is 78837520453. The next prime is 78837520459. The reversal of 78837520454 is 45402573887.

It is a super-2 number, since 2×78837520454² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78837520396 and 78837520405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78837520453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552179 + ... + 680129.

It is an arithmetic number, because the mean of its divisors is an integer number (4608575136).

Almost surely, 2^78837520454 is an apocalyptic number.

78837520454 is a deficient number, since it is larger than the sum of its proper divisors (68636883898).

78837520454 is a wasteful number, since it uses less digits than its factorization.

78837520454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131972.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 78837520454 in words is "seventy-eight billion, eight hundred thirty-seven million, five hundred twenty thousand, four hundred fifty-four".