61315576415 has 16 divisors (see below), whose sum is σ = 74603392416. Its totient is φ = 48373200000.

The previous prime is 61315576411. The next prime is 61315576493. The reversal of 61315576415 is 51467551316.

It is not a de Polignac number, because 61315576415 - 2² = 61315576411 is a prime.

It is a super-2 number, since 2×61315576415² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61315576411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115112 + ... + 368621.

It is an arithmetic number, because the mean of its divisors is an integer number (4662712026).

Almost surely, 2^61315576415 is an apocalyptic number.

61315576415 is a deficient number, since it is larger than the sum of its proper divisors (13287816001).

61315576415 is a wasteful number, since it uses less digits than its factorization.

61315576415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484090.

The product of its digits is 378000, while the sum is 44.

The spelling of 61315576415 in words is "sixty-one billion, three hundred fifteen million, five hundred seventy-six thousand, four hundred fifteen".