53939557661200 has 60 divisors (see below), whose sum is σ = 129689703553300. Its totient is φ = 21559187681280.

The previous prime is 53939557661191. The next prime is 53939557661221. The reversal of 53939557661200 is 216675593935.

It can be written as a sum of positive squares in 6 ways, for example, as 344507954704 + 53595049706496 = 586948^2 + 7320864^2 .

It is a super-2 number, since 2×53939557661200² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51466125 + ... + 52503724.

Almost surely, 2^{53939557661200} is an apocalyptic number.

53939557661200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53939557661200 is an abundant number, since it is smaller than the sum of its proper divisors (75750145892100).

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

53939557661200 is a wasteful number, since it uses less digits than its factorization.

53939557661200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103971164 (or 103971153 counting only the distinct ones).

The product of its (nonzero) digits is 45927000, while the sum is 61.

The spelling of 53939557661200 in words is "fifty-three trillion, nine hundred thirty-nine billion, five hundred fifty-seven million, six hundred sixty-one thousand, two hundred".