61501969053 has 24 divisors (see below), whose sum is σ = 101537654400. Its totient is φ = 35140315104.

The previous prime is 61501969031. The next prime is 61501969073. The reversal of 61501969053 is 35096910516.

61501969053 is a `hidden beast` number, since 6 + 1 + 501 + 9 + 6 + 90 + 53 = 666.

It is not a de Polignac number, because 61501969053 - 2⁵ = 61501969021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61501969073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 629088 + ... + 720246.

It is an arithmetic number, because the mean of its divisors is an integer number (4230735600).

Almost surely, 2^61501969053 is an apocalyptic number.

61501969053 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61501969053 is a deficient number, since it is larger than the sum of its proper divisors (40035685347).

61501969053 is a wasteful number, since it uses less digits than its factorization.

61501969053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101881 (or 101878 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The spelling of 61501969053 in words is "sixty-one billion, five hundred one million, nine hundred sixty-nine thousand, fifty-three".