61192808761442 has 4 divisors (see below), whose sum is σ = 91789213142166. Its totient is φ = 30596404380720.

The previous prime is 61192808761411. The next prime is 61192808761451. The reversal of 61192808761442 is 24416780829116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45790001782561 + 15402806978881 = 6766831^2 + 3924641^2 .

It is a super-2 number, since 2×61192808761442² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15298202190359 + ... + 15298202190362.

Almost surely, 2^{61192808761442} is an apocalyptic number.

61192808761442 is a deficient number, since it is larger than the sum of its proper divisors (30596404380724).

61192808761442 is a wasteful number, since it uses less digits than its factorization.

61192808761442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30596404380723.

The product of its (nonzero) digits is 9289728, while the sum is 59.

The spelling of 61192808761442 in words is "sixty-one trillion, one hundred ninety-two billion, eight hundred eight million, seven hundred sixty-one thousand, four hundred forty-two".