61500267455 has 16 divisors (see below), whose sum is σ = 80635087008. Its totient is φ = 44657664000.

The previous prime is 61500267419. The next prime is 61500267457. The reversal of 61500267455 is 55476200516.

It is not a de Polignac number, because 61500267455 - 2¹² = 61500263359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61500267457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836966 + ... + 907475.

It is an arithmetic number, because the mean of its divisors is an integer number (5039692938).

Almost surely, 2^61500267455 is an apocalyptic number.

61500267455 is a deficient number, since it is larger than the sum of its proper divisors (19134819553).

61500267455 is a wasteful number, since it uses less digits than its factorization.

61500267455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745098.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 61500267455 in words is "sixty-one billion, five hundred million, two hundred sixty-seven thousand, four hundred fifty-five".