1401031779838 has 8 divisors (see below), whose sum is σ = 2120145437088. Its totient is φ = 694316634144.

The previous prime is 1401031779811. The next prime is 1401031779839. The reversal of 1401031779838 is 8389771301041.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401031779839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3099627606 + ... + 3099628057.

It is an arithmetic number, because the mean of its divisors is an integer number (265018179636).

Almost surely, 2^{1401031779838} is an apocalyptic number.

1401031779838 is a deficient number, since it is larger than the sum of its proper divisors (719113657250).

1401031779838 is a wasteful number, since it uses less digits than its factorization.

1401031779838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6199255778.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 1401031779838 in words is "one trillion, four hundred one billion, thirty-one million, seven hundred seventy-nine thousand, eight hundred thirty-eight".