61404543022515 has 96 divisors (see below), whose sum is σ = 124698278628864. Its totient is φ = 25514502773760.

The previous prime is 61404543022489. The next prime is 61404543022531. The reversal of 61404543022515 is 51522034540416.

It is not a de Polignac number, because 61404543022515 - 2⁷ = 61404543022387 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47934427 + ... + 49198763.

It is an arithmetic number, because the mean of its divisors is an integer number (1298940402384).

Almost surely, 2^{61404543022515} is an apocalyptic number.

61404543022515 is an abundant number, since it is smaller than the sum of its proper divisors (63293735606349).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61404543022515 is a wasteful number, since it uses less digits than its factorization.

61404543022515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270377 (or 1270370 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 61404543022515 in words is "sixty-one trillion, four hundred four billion, five hundred forty-three million, twenty-two thousand, five hundred fifteen".