400748649506 has 8 divisors (see below), whose sum is σ = 608365419984. Its totient is φ = 197960176180.

The previous prime is 400748649481. The next prime is 400748649559. The reversal of 400748649506 is 605946847004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207074080 + ... + 1207074411.

It is an arithmetic number, because the mean of its divisors is an integer number (76045677498).

Almost surely, 2^400748649506 is an apocalyptic number.

400748649506 is a deficient number, since it is larger than the sum of its proper divisors (207616770478).

400748649506 is a wasteful number, since it uses less digits than its factorization.

400748649506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414148576.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 400748649506 in words is "four hundred billion, seven hundred forty-eight million, six hundred forty-nine thousand, five hundred six".