61373763542155 has 8 divisors (see below), whose sum is σ = 73767881758752. Its totient is φ = 49019433828288.

The previous prime is 61373763542153. The next prime is 61373763542177. The reversal of 61373763542155 is 55124536737316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61373763542155 - 2¹ = 61373763542153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61373763542155.

It is not an unprimeable number, because it can be changed into a prime (61373763542153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9947122287 + ... + 9947128456.

It is an arithmetic number, because the mean of its divisors is an integer number (9220985219844).

Almost surely, 2^{61373763542155} is an apocalyptic number.

61373763542155 is a deficient number, since it is larger than the sum of its proper divisors (12394118216597).

61373763542155 is a wasteful number, since it uses less digits than its factorization.

61373763542155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894251365.

The product of its digits is 47628000, while the sum is 58.

The spelling of 61373763542155 in words is "sixty-one trillion, three hundred seventy-three billion, seven hundred sixty-three million, five hundred forty-two thousand, one hundred fifty-five".