61165057501503 has 24 divisors (see below), whose sum is σ = 88442466059376. Its totient is φ = 40733827948800.

The previous prime is 61165057501501. The next prime is 61165057501523. The reversal of 61165057501503 is 30510575056116.

61165057501503 is a `hidden beast` number, since 6 + 1 + 1 + 65 + 0 + 575 + 0 + 15 + 0 + 3 = 666.

It is not a de Polignac number, because 61165057501503 - 2¹ = 61165057501501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61165057501501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40950613 + ... + 42417953.

It is an arithmetic number, because the mean of its divisors is an integer number (3685102752474).

Almost surely, 2^{61165057501503} is an apocalyptic number.

61165057501503 is a deficient number, since it is larger than the sum of its proper divisors (27277408557873).

61165057501503 is a wasteful number, since it uses less digits than its factorization.

61165057501503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472215 (or 1472212 counting only the distinct ones).

The product of its (nonzero) digits is 472500, while the sum is 45.

The spelling of 61165057501503 in words is "sixty-one trillion, one hundred sixty-five billion, fifty-seven million, five hundred one thousand, five hundred three".