61373726415 has 24 divisors (see below), whose sum is σ = 106398770400. Its totient is φ = 32727225024.

The previous prime is 61373726411. The next prime is 61373726419. The reversal of 61373726415 is 51462737316.

61373726415 is a `hidden beast` number, since 6 + 1 + 373 + 7 + 264 + 15 = 666.

It is an interprime number because it is at equal distance from previous prime (61373726411) and next prime (61373726419).

It is not a de Polignac number, because 61373726415 - 2² = 61373726411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61373726411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168949 + ... + 388961.

It is an arithmetic number, because the mean of its divisors is an integer number (4433282100).

Almost surely, 2^61373726415 is an apocalyptic number.

61373726415 is a deficient number, since it is larger than the sum of its proper divisors (45025043985).

61373726415 is a wasteful number, since it uses less digits than its factorization.

61373726415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226223 (or 226220 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 61373726415 in words is "sixty-one billion, three hundred seventy-three million, seven hundred twenty-six thousand, four hundred fifteen".