406451501623540 has 24 divisors (see below), whose sum is σ = 853548633020160. Its totient is φ = 162580509295008.

The previous prime is 406451501623459. The next prime is 406451501623543. The reversal of 406451501623540 is 45326105154604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406451501623543) 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, 39507589 + ... + 48721171.

It is an arithmetic number, because the mean of its divisors is an integer number (35564526375840).

Almost surely, 2^{406451501623540} is an apocalyptic number.

It is an amenable number.

406451501623540 is an abundant number, since it is smaller than the sum of its proper divisors (447097131396620).

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

406451501623540 is a wasteful number, since it uses less digits than its factorization.

406451501623540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11419311 (or 11419309 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 406451501623540 in words is "four hundred six trillion, four hundred fifty-one billion, five hundred one million, six hundred twenty-three thousand, five hundred forty".