61464404894 has 4 divisors (see below), whose sum is σ = 92196607344. Its totient is φ = 30732202446.

The previous prime is 61464404879. The next prime is 61464404951. The reversal of 61464404894 is 49840446416.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15366101222 + ... + 15366101225.

It is an arithmetic number, because the mean of its divisors is an integer number (23049151836).

Almost surely, 2^61464404894 is an apocalyptic number.

61464404894 is a deficient number, since it is larger than the sum of its proper divisors (30732202450).

61464404894 is a wasteful number, since it uses less digits than its factorization.

61464404894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30732202449.

The product of its (nonzero) digits is 2654208, while the sum is 50.

The spelling of 61464404894 in words is "sixty-one billion, four hundred sixty-four million, four hundred four thousand, eight hundred ninety-four".