61679001894 has 32 divisors (see below), whose sum is σ = 130634850816. Its totient is φ = 19347239040.

The previous prime is 61679001869. The next prime is 61679001971. The reversal of 61679001894 is 49810097616.

It is a happy number.

61679001894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656839 + ... + 744845.

It is an arithmetic number, because the mean of its divisors is an integer number (4082339088).

Almost surely, 2^61679001894 is an apocalyptic number.

61679001894 is an abundant number, since it is smaller than the sum of its proper divisors (68955848922).

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

61679001894 is a wasteful number, since it uses less digits than its factorization.

61679001894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94900.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 61679001894 in words is "sixty-one billion, six hundred seventy-nine million, one thousand, eight hundred ninety-four".