61651442654 has 16 divisors (see below), whose sum is σ = 94092451200. Its totient is φ = 30287824344.

The previous prime is 61651442647. The next prime is 61651442663. The reversal of 61651442654 is 45624415616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101519 + ... + 365525.

It is an arithmetic number, because the mean of its divisors is an integer number (5880778200).

Almost surely, 2^61651442654 is an apocalyptic number.

61651442654 is a deficient number, since it is larger than the sum of its proper divisors (32441008546).

61651442654 is a wasteful number, since it uses less digits than its factorization.

61651442654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266047.

The product of its digits is 691200, while the sum is 44.

The spelling of 61651442654 in words is "sixty-one billion, six hundred fifty-one million, four hundred forty-two thousand, six hundred fifty-four".