1553931693940 has 24 divisors (see below), whose sum is σ = 3263288368032. Its totient is φ = 621566618400.

The previous prime is 1553931693931. The next prime is 1553931693961. The reversal of 1553931693940 is 493961393551.

It is a congruent number.

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, 2129415 + ... + 2764465.

It is an arithmetic number, because the mean of its divisors is an integer number (135970348668).

Almost surely, 2^{1553931693940} is an apocalyptic number.

1553931693940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553931693940 is an abundant number, since it is smaller than the sum of its proper divisors (1709356674092).

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

1553931693940 is a wasteful number, since it uses less digits than its factorization.

1553931693940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757407 (or 757405 counting only the distinct ones).

The product of its (nonzero) digits is 11809800, while the sum is 58.

The spelling of 1553931693940 in words is "one trillion, five hundred fifty-three billion, nine hundred thirty-one million, six hundred ninety-three thousand, nine hundred forty".