61051630563 has 48 divisors (see below), whose sum is σ = 110683872000. Its totient is φ = 31502226240.

The previous prime is 61051630559. The next prime is 61051630571. The reversal of 61051630563 is 36503615016.

61051630563 is a `hidden beast` number, since 6 + 10 + 5 + 1 + 630 + 5 + 6 + 3 = 666.

It is not a de Polignac number, because 61051630563 - 2² = 61051630559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61051630513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 192373 + ... + 398886.

It is an arithmetic number, because the mean of its divisors is an integer number (2305914000).

Almost surely, 2^61051630563 is an apocalyptic number.

61051630563 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

61051630563 is a deficient number, since it is larger than the sum of its proper divisors (49632241437).

61051630563 is a wasteful number, since it uses less digits than its factorization.

61051630563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591432 (or 591429 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 61051630563 in words is "sixty-one billion, fifty-one million, six hundred thirty thousand, five hundred sixty-three".