202641561542464 has 56 divisors (see below), whose sum is σ = 438706011027168. Its totient is φ = 92102853680640.

The previous prime is 202641561542437. The next prime is 202641561542509. The reversal of 202641561542464 is 464245165146202.

It is a happy number.

202641561542464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 1508119 + ... + 20188054.

Almost surely, 2^{202641561542464} is an apocalyptic number.

It is an amenable number.

202641561542464 is an abundant number, since it is smaller than the sum of its proper divisors (236064449484704).

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

202641561542464 is a wasteful number, since it uses less digits than its factorization.

202641561542464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21709463 (or 21709453 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 52.

The spelling of 202641561542464 in words is "two hundred two trillion, six hundred forty-one billion, five hundred sixty-one million, five hundred forty-two thousand, four hundred sixty-four".