21577153231002 has 16 divisors (see below), whose sum is σ = 45692795077632. Its totient is φ = 6769302974400.

The previous prime is 21577153230989. The next prime is 21577153231009. The reversal of 21577153231002 is 20013235177512.

It is not an unprimeable number, because it can be changed into a prime (21577153231009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105770358874 + ... + 105770359077.

It is an arithmetic number, because the mean of its divisors is an integer number (2855799692352).

Almost surely, 2^{21577153231002} is an apocalyptic number.

21577153231002 is an abundant number, since it is smaller than the sum of its proper divisors (24115641846630).

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

21577153231002 is a wasteful number, since it uses less digits than its factorization.

21577153231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211540717973.

The product of its (nonzero) digits is 88200, while the sum is 39.

The spelling of 21577153231002 in words is "twenty-one trillion, five hundred seventy-seven billion, one hundred fifty-three million, two hundred thirty-one thousand, two".