1540220881532 has 12 divisors (see below), whose sum is σ = 2812577262096. Its totient is φ = 736627378080.

The previous prime is 1540220881517. The next prime is 1540220881561. The reversal of 1540220881532 is 2351880220451.

It is a super-2 number, since 2×1540220881532² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1540220881532.

It is a congruent number.

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, 8370765569 + ... + 8370765752.

It is an arithmetic number, because the mean of its divisors is an integer number (234381438508).

Almost surely, 2^{1540220881532} is an apocalyptic number.

It is an amenable number.

1540220881532 is a deficient number, since it is larger than the sum of its proper divisors (1272356380564).

1540220881532 is a wasteful number, since it uses less digits than its factorization.

1540220881532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16741531348 (or 16741531346 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 1540220881532 in words is "one trillion, five hundred forty billion, two hundred twenty million, eight hundred eighty-one thousand, five hundred thirty-two".