202894666542 has 48 divisors (see below), whose sum is σ = 441710051328. Its totient is φ = 67307904720.

The previous prime is 202894666487. The next prime is 202894666567. The reversal of 202894666542 is 245666498202.

It is a super-2 number, since 2×202894666542² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19386403 + ... + 19396865.

It is an arithmetic number, because the mean of its divisors is an integer number (9202292736).

Almost surely, 2^202894666542 is an apocalyptic number.

202894666542 is an abundant number, since it is smaller than the sum of its proper divisors (238815384786).

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

202894666542 is a wasteful number, since it uses less digits than its factorization.

202894666542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15525 (or 15522 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 202894666542 in words is "two hundred two billion, eight hundred ninety-four million, six hundred sixty-six thousand, five hundred forty-two".