61167071556 has 72 divisors (see below), whose sum is σ = 159991977600. Its totient is φ = 19680588480.

The previous prime is 61167071549. The next prime is 61167071557. The reversal of 61167071556 is 65517076116.

It is a super-2 number, since 2×61167071556² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61167071557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5957155 + ... + 5967413.

It is an arithmetic number, because the mean of its divisors is an integer number (2222110800).

Almost surely, 2^61167071556 is an apocalyptic number.

It is an amenable number.

61167071556 is an abundant number, since it is smaller than the sum of its proper divisors (98824906044).

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

61167071556 is a wasteful number, since it uses less digits than its factorization.

61167071556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16009 (or 16004 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 61167071556 in words is "sixty-one billion, one hundred sixty-seven million, seventy-one thousand, five hundred fifty-six".