405541758972 has 72 divisors (see below), whose sum is σ = 1112104361424. Its totient is φ = 114674531328.

The previous prime is 405541758949. The next prime is 405541758989. The reversal of 405541758972 is 279857145504.

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, 3498103 + ... + 3612174.

Almost surely, 2^405541758972 is an apocalyptic number.

405541758972 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

405541758972 is an abundant number, since it is smaller than the sum of its proper divisors (706562602452).

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

405541758972 is a wasteful number, since it uses less digits than its factorization.

405541758972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7110395 (or 7110386 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 57.

The spelling of 405541758972 in words is "four hundred five billion, five hundred forty-one million, seven hundred fifty-eight thousand, nine hundred seventy-two".