401539166654 has 4 divisors (see below), whose sum is σ = 602308749984. Its totient is φ = 200769583326.

The previous prime is 401539166621. The next prime is 401539166657. The reversal of 401539166654 is 456661935104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×401539166654² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401539166657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100384791662 + ... + 100384791665.

It is an arithmetic number, because the mean of its divisors is an integer number (150577187496).

Almost surely, 2^401539166654 is an apocalyptic number.

401539166654 is a deficient number, since it is larger than the sum of its proper divisors (200769583330).

401539166654 is a wasteful number, since it uses less digits than its factorization.

401539166654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200769583329.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 401539166654 in words is "four hundred one billion, five hundred thirty-nine million, one hundred sixty-six thousand, six hundred fifty-four".