61167677042 has 32 divisors (see below), whose sum is σ = 95820976944. Its totient is φ = 29257113600.

The previous prime is 61167677029. The next prime is 61167677071. The reversal of 61167677042 is 24077676116.

It is a Cunningham number, because it is equal to 247321²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 21363037921 + 39804639121 = 146161^2 + 199511^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9649298 + ... + 9655634.

Almost surely, 2^61167677042 is an apocalyptic number.

61167677042 is a deficient number, since it is larger than the sum of its proper divisors (34653299902).

61167677042 is a wasteful number, since it uses less digits than its factorization.

61167677042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8654.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 61167677042 in words is "sixty-one billion, one hundred sixty-seven million, six hundred seventy-seven thousand, forty-two".