1321990520692 has 24 divisors (see below), whose sum is σ = 2449689903360. Its totient is φ = 622082904960.

The previous prime is 1321990520677. The next prime is 1321990520701. The reversal of 1321990520692 is 2960250991231.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

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, 966109 + ... + 1891387.

It is an arithmetic number, because the mean of its divisors is an integer number (102070412640).

Almost surely, 2^{1321990520692} is an apocalyptic number.

It is an amenable number.

1321990520692 is a deficient number, since it is larger than the sum of its proper divisors (1127699382668).

1321990520692 is a wasteful number, since it uses less digits than its factorization.

1321990520692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946311 (or 946309 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 1321990520692 in words is "one trillion, three hundred twenty-one billion, nine hundred ninety million, five hundred twenty thousand, six hundred ninety-two".