61207619144 has 32 divisors (see below), whose sum is σ = 131167641600. Its totient is φ = 26230145280.

The previous prime is 61207619093. The next prime is 61207619171. The reversal of 61207619144 is 44191670216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266464 + ... + 1313904.

It is an arithmetic number, because the mean of its divisors is an integer number (4098988800).

Almost surely, 2^61207619144 is an apocalyptic number.

It is an amenable number.

61207619144 is an abundant number, since it is smaller than the sum of its proper divisors (69960022456).

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

61207619144 is a wasteful number, since it uses less digits than its factorization.

61207619144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70493 (or 70489 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 61207619144 in words is "sixty-one billion, two hundred seven million, six hundred nineteen thousand, one hundred forty-four".