61496985654123 has 4 divisors (see below), whose sum is σ = 81995980872168. Its totient is φ = 40997990436080.

The previous prime is 61496985654109. The next prime is 61496985654131. The reversal of 61496985654123 is 32145658969416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61496985654123 - 2²⁶ = 61496918545259 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61496985654163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10249497609018 + ... + 10249497609023.

It is an arithmetic number, because the mean of its divisors is an integer number (20498995218042).

Almost surely, 2^{61496985654123} is an apocalyptic number.

61496985654123 is a deficient number, since it is larger than the sum of its proper divisors (20498995218045).

61496985654123 is a wasteful number, since it uses less digits than its factorization.

61496985654123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20498995218044.

The product of its digits is 335923200, while the sum is 69.

The spelling of 61496985654123 in words is "sixty-one trillion, four hundred ninety-six billion, nine hundred eighty-five million, six hundred fifty-four thousand, one hundred twenty-three".