6631524120451 has 4 divisors (see below), whose sum is σ = 6632531804304. Its totient is φ = 6630516436600.

The previous prime is 6631524120409. The next prime is 6631524120497. The reversal of 6631524120451 is 1540214251366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6631524120451 - 2⁷ = 6631524120323 is a prime.

It is a super-2 number, since 2×6631524120451² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6631524120751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503832055 + ... + 503845216.

It is an arithmetic number, because the mean of its divisors is an integer number (1658132951076).

Almost surely, 2^{6631524120451} is an apocalyptic number.

6631524120451 is a deficient number, since it is larger than the sum of its proper divisors (1007683853).

6631524120451 is a wasteful number, since it uses less digits than its factorization.

6631524120451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007683852.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 6631524120451 in words is "six trillion, six hundred thirty-one billion, five hundred twenty-four million, one hundred twenty thousand, four hundred fifty-one".