61404901909662 has 128 divisors (see below), whose sum is σ = 130532055413760. Its totient is φ = 19222976424960.

The previous prime is 61404901909643. The next prime is 61404901909699. The reversal of 61404901909662 is 26690910940416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3334857568 + ... + 3334875980.

It is an arithmetic number, because the mean of its divisors is an integer number (1019781682920).

Almost surely, 2^{61404901909662} is an apocalyptic number.

61404901909662 is an abundant number, since it is smaller than the sum of its proper divisors (69127153504098).

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

61404901909662 is a wasteful number, since it uses less digits than its factorization.

61404901909662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19858.

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 61404901909662 in words is "sixty-one trillion, four hundred four billion, nine hundred one million, nine hundred nine thousand, six hundred sixty-two".