1540257220264 has 32 divisors (see below), whose sum is σ = 3302910576000. Its totient is φ = 659638359360.

The previous prime is 1540257220259. The next prime is 1540257220297. The reversal of 1540257220264 is 4620227520451.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9751747 + ... + 9908434.

It is an arithmetic number, because the mean of its divisors is an integer number (103215955500).

Almost surely, 2^{1540257220264} is an apocalyptic number.

1540257220264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1540257220264 is an abundant number, since it is smaller than the sum of its proper divisors (1762653355736).

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

1540257220264 is a wasteful number, since it uses less digits than its factorization.

1540257220264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19661593 (or 19661589 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 1540257220264 in words is "one trillion, five hundred forty billion, two hundred fifty-seven million, two hundred twenty thousand, two hundred sixty-four".