54201157521640 has 16 divisors (see below), whose sum is σ = 121952604423780. Its totient is φ = 21680463008640.

The previous prime is 54201157521551. The next prime is 54201157521653. The reversal of 54201157521640 is 4612575110245.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49532852809764 + 4668304711876 = 7037958^2 + 2160626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677514468981 + ... + 677514469060.

Almost surely, 2^{54201157521640} is an apocalyptic number.

It is an amenable number.

54201157521640 is an abundant number, since it is smaller than the sum of its proper divisors (67751446902140).

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

54201157521640 is a wasteful number, since it uses less digits than its factorization.

54201157521640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355028938052 (or 1355028938048 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 54201157521640 in words is "fifty-four trillion, two hundred one billion, one hundred fifty-seven million, five hundred twenty-one thousand, six hundred forty".