21245031553141 has 32 divisors (see below), whose sum is σ = 23396855021568. Its totient is φ = 19130800328640.

The previous prime is 21245031553117. The next prime is 21245031553181. The reversal of 21245031553141 is 14135513054212.

It is not a de Polignac number, because 21245031553141 - 2¹³ = 21245031544949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21245031553141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21245031553111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 869154066 + ... + 869178508.

It is an arithmetic number, because the mean of its divisors is an integer number (731151719424).

Almost surely, 2^{21245031553141} is an apocalyptic number.

It is an amenable number.

21245031553141 is a deficient number, since it is larger than the sum of its proper divisors (2151823468427).

21245031553141 is a wasteful number, since it uses less digits than its factorization.

21245031553141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26161.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 21245031553141 in words is "twenty-one trillion, two hundred forty-five billion, thirty-one million, five hundred fifty-three thousand, one hundred forty-one".