4651661564 has 18 divisors (see below), whose sum is σ = 8947721832. Its totient is φ = 2114391400.

The previous prime is 4651661537. The next prime is 4651661593.

4651661564 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4804952 + ... + 4805919.

Almost surely, 2^4651661564 is an apocalyptic number.

4651661564 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4651661564 is a deficient number, since it is larger than the sum of its proper divisors (4296060268).

4651661564 is a wasteful number, since it uses less digits than its factorization.

4651661564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610897 (or 9610884 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The square root of 4651661564 is about 68203.0905751345. The cubic root of 4651661564 is about 1669.3063159351.

The spelling of 4651661564 in words is "four billion, six hundred fifty-one million, six hundred sixty-one thousand, five hundred sixty-four".