451015537720 has 96 divisors (see below), whose sum is σ = 1168370302320. Its totient is φ = 155373719040.

The previous prime is 451015537711. The next prime is 451015537813. The reversal of 451015537720 is 27735510154.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 1260877 + ... + 1578556.

Almost surely, 2^451015537720 is an apocalyptic number.

451015537720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451015537720 is an abundant number, since it is smaller than the sum of its proper divisors (717354764600).

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

451015537720 is a wasteful number, since it uses less digits than its factorization.

451015537720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839493 (or 2839470 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 451015537720 in words is "four hundred fifty-one billion, fifteen million, five hundred thirty-seven thousand, seven hundred twenty".