21570057493132 has 6 divisors (see below), whose sum is σ = 37747600612988. Its totient is φ = 10785028746564.

The previous prime is 21570057493109. The next prime is 21570057493151. The reversal of 21570057493132 is 23139475007512.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2696257186638 + ... + 2696257186645.

Almost surely, 2^{21570057493132} is an apocalyptic number.

It is an amenable number.

21570057493132 is a deficient number, since it is larger than the sum of its proper divisors (16177543119856).

21570057493132 is a wasteful number, since it uses less digits than its factorization.

21570057493132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392514373287 (or 5392514373285 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 21570057493132 in words is "twenty-one trillion, five hundred seventy billion, fifty-seven million, four hundred ninety-three thousand, one hundred thirty-two".