401969722770 has 768 divisors, whose sum is σ = 1460519424000. Its totient is φ = 78582389760.

The previous prime is 401969722769. The next prime is 401969722811. The reversal of 401969722770 is 77227969104.

401969722770 is a `hidden beast` number, since 401 + 9 + 6 + 9 + 7 + 227 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 155861341 + ... + 155863919.

It is an arithmetic number, because the mean of its divisors is an integer number (1901718000).

Almost surely, 2^401969722770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401969722770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730259712000).

401969722770 is an abundant number, since it is smaller than the sum of its proper divisors (1058549701230).

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

401969722770 is a wasteful number, since it uses less digits than its factorization.

401969722770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2624 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 401969722770 in words is "four hundred one billion, nine hundred sixty-nine million, seven hundred twenty-two thousand, seven hundred seventy".