61503663630 has 32 divisors (see below), whose sum is σ = 147629354400. Its totient is φ = 16398692352.

The previous prime is 61503663629. The next prime is 61503663649. The reversal of 61503663630 is 3636630516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81966 + ... + 360174.

It is an arithmetic number, because the mean of its divisors is an integer number (4613417325).

Almost surely, 2^61503663630 is an apocalyptic number.

61503663630 is an abundant number, since it is smaller than the sum of its proper divisors (86125690770).

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

61503663630 is a wasteful number, since it uses less digits than its factorization.

61503663630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285588.

The product of its (nonzero) digits is 174960, while the sum is 39.

The spelling of 61503663630 in words is "sixty-one billion, five hundred three million, six hundred sixty-three thousand, six hundred thirty".