61620167079 has 12 divisors (see below), whose sum is σ = 89022997336. Its totient is φ = 41072685552.

The previous prime is 61620167051. The next prime is 61620167099. The reversal of 61620167079 is 97076102616.

It is a happy number.

61620167079 is a `hidden beast` number, since 6 + 1 + 620 + 16 + 7 + 0 + 7 + 9 = 666.

61620167079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61620167079 - 2⁹ = 61620166567 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 (61620167029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566029 + ... + 666054.

Almost surely, 2^61620167079 is an apocalyptic number.

61620167079 is a deficient number, since it is larger than the sum of its proper divisors (27402830257).

61620167079 is a wasteful number, since it uses less digits than its factorization.

61620167079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237646 (or 1237643 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 61620167079 in words is "sixty-one billion, six hundred twenty million, one hundred sixty-seven thousand, seventy-nine".