61620167124 has 60 divisors (see below), whose sum is σ = 161260001364. Its totient is φ = 20518033536.

The previous prime is 61620167117. The next prime is 61620167143. The reversal of 61620167124 is 42176102616.

61620167124 is a `hidden beast` number, since 6 + 1 + 620 + 1 + 6 + 7 + 1 + 24 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26677342224 + 34942824900 = 163332^2 + 186930^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 202102 + ... + 405074.

Almost surely, 2^61620167124 is an apocalyptic number.

It is an amenable number.

61620167124 is an abundant number, since it is smaller than the sum of its proper divisors (99639834240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61620167124 is a wasteful number, since it uses less digits than its factorization.

61620167124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203926 (or 203915 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 61620167124 in words is "sixty-one billion, six hundred twenty million, one hundred sixty-seven thousand, one hundred twenty-four".