20949354413574 has 32 divisors (see below), whose sum is σ = 42042999529440. Its totient is φ = 6959071153152.

The previous prime is 20949354413563. The next prime is 20949354413609. The reversal of 20949354413574 is 47531445394902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63314614 + ... + 63644630.

It is an arithmetic number, because the mean of its divisors is an integer number (1313843735295).

Almost surely, 2^{20949354413574} is an apocalyptic number.

20949354413574 is an abundant number, since it is smaller than the sum of its proper divisors (21093645115866).

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

20949354413574 is a wasteful number, since it uses less digits than its factorization.

20949354413574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366424.

The product of its (nonzero) digits is 65318400, while the sum is 60.

The spelling of 20949354413574 in words is "twenty trillion, nine hundred forty-nine billion, three hundred fifty-four million, four hundred thirteen thousand, five hundred seventy-four".