402655412940 has 96 divisors (see below), whose sum is σ = 1231936909056. Its totient is φ = 97454096640.

The previous prime is 402655412927. The next prime is 402655412969. The reversal of 402655412940 is 49214556204.

It is a junction number, because it is equal to n+sod(n) for n = 402655412892 and 402655412901.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93042 + ... + 902201.

It is an arithmetic number, because the mean of its divisors is an integer number (12832676136).

Almost surely, 2^402655412940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402655412940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615968454528).

402655412940 is an abundant number, since it is smaller than the sum of its proper divisors (829281496116).

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

402655412940 is a wasteful number, since it uses less digits than its factorization.

402655412940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995879 (or 995877 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 402655412940 in words is "four hundred two billion, six hundred fifty-five million, four hundred twelve thousand, nine hundred forty".