61111500616 has 16 divisors (see below), whose sum is σ = 114611018940. Its totient is φ = 30548562240.

The previous prime is 61111500607. The next prime is 61111500629. The reversal of 61111500616 is 61600511116.

It can be written as a sum of positive squares in 2 ways, for example, as 59531120100 + 1580380516 = 243990^2 + 39754^2 .

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, 862291 + ... + 930466.

Almost surely, 2^61111500616 is an apocalyptic number.

It is an amenable number.

61111500616 is a deficient number, since it is larger than the sum of its proper divisors (53499518324).

61111500616 is a wasteful number, since it uses less digits than its factorization.

61111500616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797024 (or 1797020 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 61111500616 in words is "sixty-one billion, one hundred eleven million, five hundred thousand, six hundred sixteen".