401666156014332 has 48 divisors (see below), whose sum is σ = 1022838731510400. Its totient is φ = 121667518292160.

The previous prime is 401666156014309. The next prime is 401666156014363. The reversal of 401666156014332 is 233410651666104.

It is a happy number.

It is a super-2 number, since 2×401666156014332² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 618407707 + ... + 619056882.

It is an arithmetic number, because the mean of its divisors is an integer number (21309140239800).

Almost surely, 2^{401666156014332} is an apocalyptic number.

It is an amenable number.

401666156014332 is an abundant number, since it is smaller than the sum of its proper divisors (621172575496068).

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

401666156014332 is a wasteful number, since it uses less digits than its factorization.

401666156014332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237467066 (or 1237467064 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 401666156014332 in words is "four hundred one trillion, six hundred sixty-six billion, one hundred fifty-six million, fourteen thousand, three hundred thirty-two".