61508357122 has 4 divisors (see below), whose sum is σ = 92262535686. Its totient is φ = 30754178560.

The previous prime is 61508357059. The next prime is 61508357123. The reversal of 61508357122 is 22175380516.

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., 52294085041 + 9214272081 = 228679^2 + 95991^2 .

It is not an unprimeable number, because it can be changed into a prime (61508357123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15377089279 + ... + 15377089282.

Almost surely, 2^61508357122 is an apocalyptic number.

61508357122 is a deficient number, since it is larger than the sum of its proper divisors (30754178564).

61508357122 is a wasteful number, since it uses less digits than its factorization.

61508357122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30754178563.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 61508357122 in words is "sixty-one billion, five hundred eight million, three hundred fifty-seven thousand, one hundred twenty-two".