61501161567 has 8 divisors (see below), whose sum is σ = 82027051696. Its totient is φ = 40988022912.

The previous prime is 61501161523. The next prime is 61501161569. The reversal of 61501161567 is 76516110516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61501161567 - 2⁸ = 61501161311 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 (61501161569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3176608 + ... + 3195909.

It is an arithmetic number, because the mean of its divisors is an integer number (10253381462).

Almost surely, 2^61501161567 is an apocalyptic number.

61501161567 is a deficient number, since it is larger than the sum of its proper divisors (20525890129).

61501161567 is a wasteful number, since it uses less digits than its factorization.

61501161567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375737.

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 61501161567 in words is "sixty-one billion, five hundred one million, one hundred sixty-one thousand, five hundred sixty-seven".