401251206380 has 48 divisors (see below), whose sum is σ = 892304411040. Its totient is φ = 151040560128.

The previous prime is 401251206371. The next prime is 401251206401. The reversal of 401251206380 is 83602152104.

It is a super-2 number, since 2×401251206380² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2845991 + ... + 2983649.

It is an arithmetic number, because the mean of its divisors is an integer number (18589675230).

Almost surely, 2^401251206380 is an apocalyptic number.

It is an amenable number.

401251206380 is an abundant number, since it is smaller than the sum of its proper divisors (491053204660).

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

401251206380 is a wasteful number, since it uses less digits than its factorization.

401251206380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146258 (or 146256 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 401251206380 its reverse (83602152104), we get a palindrome (484853358484).

The spelling of 401251206380 in words is "four hundred one billion, two hundred fifty-one million, two hundred six thousand, three hundred eighty".