5161677784 has 8 divisors (see below), whose sum is σ = 9678145860. Its totient is φ = 2580838888.

The previous prime is 5161677743. The next prime is 5161677799. The reversal of 5161677784 is 4877761615.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322604854 + ... + 322604869.

Almost surely, 2^5161677784 is an apocalyptic number.

It is an amenable number.

5161677784 is a deficient number, since it is larger than the sum of its proper divisors (4516468076).

5161677784 is a wasteful number, since it uses less digits than its factorization.

5161677784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645209729 (or 645209725 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 52.

The square root of 5161677784 is about 71844.8173774560. The cubic root of 5161677784 is about 1728.2117894206.

The spelling of 5161677784 in words is "five billion, one hundred sixty-one million, six hundred seventy-seven thousand, seven hundred eighty-four".