6451098621 has 8 divisors (see below), whose sum is σ = 9383416224. Its totient is φ = 3909756720.

The previous prime is 6451098593. The next prime is 6451098623. The reversal of 6451098621 is 1268901546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6451098621 - 2²⁶ = 6383989757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451098623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97743886 + ... + 97743951.

It is an arithmetic number, because the mean of its divisors is an integer number (1172927028).

Almost surely, 2^6451098621 is an apocalyptic number.

It is an amenable number.

6451098621 is a deficient number, since it is larger than the sum of its proper divisors (2932317603).

6451098621 is a wasteful number, since it uses less digits than its factorization.

6451098621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195487851.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 6451098621 is about 80318.7314454107. The cubic root of 6451098621 is about 1861.5636657220.

The spelling of 6451098621 in words is "six billion, four hundred fifty-one million, ninety-eight thousand, six hundred twenty-one".