61294452164 has 24 divisors (see below), whose sum is σ = 118175270976. Its totient is φ = 27585260000.

The previous prime is 61294452137. The next prime is 61294452169. The reversal of 61294452164 is 46125449216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (61294452169) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6891872 + ... + 6900759.

It is an arithmetic number, because the mean of its divisors is an integer number (4923969624).

Almost surely, 2^61294452164 is an apocalyptic number.

It is an amenable number.

61294452164 is a deficient number, since it is larger than the sum of its proper divisors (56880818812).

61294452164 is a wasteful number, since it uses less digits than its factorization.

61294452164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13792747 (or 13792745 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The spelling of 61294452164 in words is "sixty-one billion, two hundred ninety-four million, four hundred fifty-two thousand, one hundred sixty-four".