61642435401630 has 48 divisors (see below), whose sum is σ = 162465816062160. Its totient is φ = 16212804925824.

The previous prime is 61642435401611. The next prime is 61642435401641. The reversal of 61642435401630 is 3610453424616.

61642435401630 is a `hidden beast` number, since 6 + 1 + 6 + 4 + 2 + 4 + 3 + 5 + 4 + 0 + 1 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 4691198560 + ... + 4691211699.

It is an arithmetic number, because the mean of its divisors is an integer number (3384704501295).

Almost surely, 2^{61642435401630} is an apocalyptic number.

61642435401630 is an abundant number, since it is smaller than the sum of its proper divisors (100823380660530).

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

61642435401630 is a wasteful number, since it uses less digits than its factorization.

61642435401630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9382410345 (or 9382410342 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 61642435401630 in words is "sixty-one trillion, six hundred forty-two billion, four hundred thirty-five million, four hundred one thousand, six hundred thirty".