61641761667115 has 32 divisors (see below), whose sum is σ = 84558300456960. Its totient is φ = 42258124656000.

The previous prime is 61641761667067. The next prime is 61641761667133. The reversal of 61641761667115 is 51176616714616.

It is not a de Polignac number, because 61641761667115 - 2¹⁹ = 61641761142827 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 61641761667115.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4915212745 + ... + 4915225285.

It is an arithmetic number, because the mean of its divisors is an integer number (2642446889280).

Almost surely, 2^{61641761667115} is an apocalyptic number.

61641761667115 is a deficient number, since it is larger than the sum of its proper divisors (22916538789845).

61641761667115 is a wasteful number, since it uses less digits than its factorization.

61641761667115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36283.

The product of its digits is 7620480, while the sum is 58.

The spelling of 61641761667115 in words is "sixty-one trillion, six hundred forty-one billion, seven hundred sixty-one million, six hundred sixty-seven thousand, one hundred fifteen".