61490409402 has 16 divisors (see below), whose sum is σ = 130214984832. Its totient is φ = 19291108800.

The previous prime is 61490409397. The next prime is 61490409413. The reversal of 61490409402 is 20490409416.

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, 301423474 + ... + 301423677.

It is an arithmetic number, because the mean of its divisors is an integer number (8138436552).

Almost surely, 2^61490409402 is an apocalyptic number.

61490409402 is an abundant number, since it is smaller than the sum of its proper divisors (68724575430).

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

61490409402 is a wasteful number, since it uses less digits than its factorization.

61490409402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602847173.

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 61490409402 in words is "sixty-one billion, four hundred ninety million, four hundred nine thousand, four hundred two".