61158797736 has 16 divisors (see below), whose sum is σ = 152896994400. Its totient is φ = 20386265904.

The previous prime is 61158797659. The next prime is 61158797747. The reversal of 61158797736 is 63779785116.

61158797736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×61158797736³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61158797736.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274141596 + ... + 1274141643.

It is an arithmetic number, because the mean of its divisors is an integer number (9556062150).

Almost surely, 2^61158797736 is an apocalyptic number.

It is an amenable number.

61158797736 is an abundant number, since it is smaller than the sum of its proper divisors (91738196664).

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

61158797736 is a wasteful number, since it uses less digits than its factorization.

61158797736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548283248 (or 2548283244 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 60.

The spelling of 61158797736 in words is "sixty-one billion, one hundred fifty-eight million, seven hundred ninety-seven thousand, seven hundred thirty-six".