61115551167 has 16 divisors (see below), whose sum is σ = 89775504000. Its totient is φ = 36672996000.

The previous prime is 61115551151. The next prime is 61115551177. The reversal of 61115551167 is 76115551116.

It is not a de Polignac number, because 61115551167 - 2⁴ = 61115551151 is a prime.

It is a super-2 number, since 2×61115551167² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61115551177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9164917 + ... + 9171582.

It is an arithmetic number, because the mean of its divisors is an integer number (5610969000).

Almost surely, 2^61115551167 is an apocalyptic number.

61115551167 is a deficient number, since it is larger than the sum of its proper divisors (28659952833).

61115551167 is a wasteful number, since it uses less digits than its factorization.

61115551167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18336614.

The product of its digits is 31500, while the sum is 39.

The spelling of 61115551167 in words is "sixty-one billion, one hundred fifteen million, five hundred fifty-one thousand, one hundred sixty-seven".