401215128492 has 24 divisors (see below), whose sum is σ = 953832193776. Its totient is φ = 131215010368.

The previous prime is 401215128463. The next prime is 401215128533. The reversal of 401215128492 is 294821512104.

It is a self number, because there is not a number n which added to its sum of digits gives 401215128492.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315420063 + ... + 315421334.

It is an arithmetic number, because the mean of its divisors is an integer number (39743008074).

Almost surely, 2^401215128492 is an apocalyptic number.

It is an amenable number.

401215128492 is an abundant number, since it is smaller than the sum of its proper divisors (552617065284).

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

401215128492 is a wasteful number, since it uses less digits than its factorization.

401215128492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630841457 (or 630841455 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 401215128492 in words is "four hundred one billion, two hundred fifteen million, one hundred twenty-eight thousand, four hundred ninety-two".