402777901380 has 96 divisors (see below), whose sum is σ = 1135441472256. Its totient is φ = 106678181376.

The previous prime is 402777901367. The next prime is 402777901397. The reversal of 402777901380 is 83109777204.

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, 26340097 + ... + 26355383.

It is an arithmetic number, because the mean of its divisors is an integer number (11827515336).

Almost surely, 2^402777901380 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 402777901380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (567720736128).

402777901380 is an abundant number, since it is smaller than the sum of its proper divisors (732663570876).

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

402777901380 is a wasteful number, since it uses less digits than its factorization.

402777901380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18253 (or 18251 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 402777901380 in words is "four hundred two billion, seven hundred seventy-seven million, nine hundred one thousand, three hundred eighty".