61623057994 has 8 divisors (see below), whose sum is σ = 92568358368. Its totient is φ = 30766938540.

The previous prime is 61623057919. The next prime is 61623058001. The reversal of 61623057994 is 49975032616.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22293502 + ... + 22296265.

It is an arithmetic number, because the mean of its divisors is an integer number (11571044796).

Almost surely, 2^61623057994 is an apocalyptic number.

61623057994 is a deficient number, since it is larger than the sum of its proper divisors (30945300374).

61623057994 is a wasteful number, since it uses less digits than its factorization.

61623057994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44590460.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 61623057994 in words is "sixty-one billion, six hundred twenty-three million, fifty-seven thousand, nine hundred ninety-four".