623980052154 has 20 divisors (see below), whose sum is σ = 1398177524634. Its totient is φ = 207993350664.

The previous prime is 623980052123. The next prime is 623980052159. The reversal of 623980052154 is 451250089326.

623980052154 is a `hidden beast` number, since 62 + 398 + 0 + 0 + 52 + 154 = 666.

It can be written as a sum of positive squares in only one way, i.e., 394601317929 + 229378734225 = 628173^2 + 478935^2 .

It is a super-2 number, since 2×623980052154² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (623980052159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1925864197 + ... + 1925864520.

Almost surely, 2^623980052154 is an apocalyptic number.

623980052154 is an abundant number, since it is smaller than the sum of its proper divisors (774197472480).

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

623980052154 is a wasteful number, since it uses less digits than its factorization.

623980052154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851728731 (or 3851728722 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 623980052154 in words is "six hundred twenty-three billion, nine hundred eighty million, fifty-two thousand, one hundred fifty-four".