1540071612156 has 48 divisors (see below), whose sum is σ = 4480208328960. Its totient is φ = 400018600320.

The previous prime is 1540071612139. The next prime is 1540071612181. The reversal of 1540071612156 is 6512161700451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833371161 + ... + 833373008.

It is an arithmetic number, because the mean of its divisors is an integer number (93337673520).

Almost surely, 2^{1540071612156} is an apocalyptic number.

It is an amenable number.

1540071612156 is an abundant number, since it is smaller than the sum of its proper divisors (2940136716804).

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

1540071612156 is a wasteful number, since it uses less digits than its factorization.

1540071612156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666744194 (or 1666744192 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 1540071612156 in words is "one trillion, five hundred forty billion, seventy-one million, six hundred twelve thousand, one hundred fifty-six".