61612291592 has 8 divisors (see below), whose sum is σ = 115523046750. Its totient is φ = 30806145792.

The previous prime is 61612291583. The next prime is 61612291603. The reversal of 61612291592 is 29519221616.

It can be written as a sum of positive squares in only one way, i.e., 36399297796 + 25212993796 = 190786^2 + 158786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3850768217 + ... + 3850768232.

Almost surely, 2^61612291592 is an apocalyptic number.

It is an amenable number.

61612291592 is a deficient number, since it is larger than the sum of its proper divisors (53910755158).

61612291592 is a wasteful number, since it uses less digits than its factorization.

61612291592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701536455 (or 7701536451 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The spelling of 61612291592 in words is "sixty-one billion, six hundred twelve million, two hundred ninety-one thousand, five hundred ninety-two".