61500260151 has 80 divisors (see below), whose sum is σ = 103268040480. Its totient is φ = 36156257280.

The previous prime is 61500260117. The next prime is 61500260201. The reversal of 61500260151 is 15106200516.

It is a happy number.

61500260151 is a `hidden beast` number, since 6 + 1 + 5 + 0 + 0 + 2 + 601 + 51 = 666.

It is not a de Polignac number, because 61500260151 - 2⁷ = 61500260023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61500260651) 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 79 ways as a sum of consecutive naturals, for example, 4195531 + ... + 4210163.

It is an arithmetic number, because the mean of its divisors is an integer number (1290850506).

Almost surely, 2^61500260151 is an apocalyptic number.

61500260151 is a deficient number, since it is larger than the sum of its proper divisors (41767780329).

61500260151 is a wasteful number, since it uses less digits than its factorization.

61500260151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14798 (or 14789 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 61500260151 its reverse (15106200516), we get a palindrome (76606460667).

The spelling of 61500260151 in words is "sixty-one billion, five hundred million, two hundred sixty thousand, one hundred fifty-one".