61316137690 has 16 divisors (see below), whose sum is σ = 115167702528. Its totient is φ = 23460087376.

The previous prime is 61316137681. The next prime is 61316137691. The reversal of 61316137690 is 9673161316.

It is a super-2 number, since 2×61316137690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61316137691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133295722 + ... + 133296181.

It is an arithmetic number, because the mean of its divisors is an integer number (7197981408).

Almost surely, 2^61316137690 is an apocalyptic number.

61316137690 is a deficient number, since it is larger than the sum of its proper divisors (53851564838).

61316137690 is a wasteful number, since it uses less digits than its factorization.

61316137690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266591933.

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 61316137690 in words is "sixty-one billion, three hundred sixteen million, one hundred thirty-seven thousand, six hundred ninety".