2651398464 has 168 divisors, whose sum is σ = 8304966880. Its totient is φ = 741565440.

The previous prime is 2651398391. The next prime is 2651398483. The reversal of 2651398464 is 4648931562.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297627 + ... + 306405.

Almost surely, 2^2651398464 is an apocalyptic number.

2651398464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2651398464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4152483440).

2651398464 is an abundant number, since it is smaller than the sum of its proper divisors (5653568416).

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

2651398464 is a wasteful number, since it uses less digits than its factorization.

2651398464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829 (or 8808 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 2651398464 is about 51491.7319965060. The cubic root of 2651398464 is about 1384.0708863645.

The spelling of 2651398464 in words is "two billion, six hundred fifty-one million, three hundred ninety-eight thousand, four hundred sixty-four".