1540000012872 has 16 divisors (see below), whose sum is σ = 3850000032240. Its totient is φ = 513333337616.

The previous prime is 1540000012849. The next prime is 1540000012897. The reversal of 1540000012872 is 2782100000451.

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, 32083333578 + ... + 32083333625.

It is an arithmetic number, because the mean of its divisors is an integer number (240625002015).

Almost surely, 2^{1540000012872} is an apocalyptic number.

1540000012872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540000012872 is an abundant number, since it is smaller than the sum of its proper divisors (2310000019368).

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

1540000012872 is a wasteful number, since it uses less digits than its factorization.

1540000012872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64166667212 (or 64166667208 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The spelling of 1540000012872 in words is "one trillion, five hundred forty billion, twelve thousand, eight hundred seventy-two".