390130026781 has 8 divisors (see below), whose sum is σ = 425982259584. Its totient is φ = 354342105120.

The previous prime is 390130026779. The next prime is 390130026791. The reversal of 390130026781 is 187620031093.

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

It is a cyclic number.

It is not a de Polignac number, because 390130026781 - 2¹ = 390130026779 is a prime.

It is a super-2 number, since 2×390130026781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390130026791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16065096 + ... + 16089361.

It is an arithmetic number, because the mean of its divisors is an integer number (53247782448).

Almost surely, 2^390130026781 is an apocalyptic number.

It is an amenable number.

390130026781 is a deficient number, since it is larger than the sum of its proper divisors (35852232803).

390130026781 is a wasteful number, since it uses less digits than its factorization.

390130026781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32155571.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 390130026781 in words is "three hundred ninety billion, one hundred thirty million, twenty-six thousand, seven hundred eighty-one".