1390275137655 has 32 divisors (see below), whose sum is σ = 2471659185600. Its totient is φ = 741462391296.

The previous prime is 1390275137621. The next prime is 1390275137717. The reversal of 1390275137655 is 5567315720931.

1390275137655 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 2 + 7 + 513 + 76 + 55 = 666.

It is not a de Polignac number, because 1390275137655 - 2²² = 1390270943351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7147731 + ... + 7339659.

It is an arithmetic number, because the mean of its divisors is an integer number (77239349550).

Almost surely, 2^{1390275137655} is an apocalyptic number.

1390275137655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1390275137655 is a deficient number, since it is larger than the sum of its proper divisors (1081384047945).

1390275137655 is a wasteful number, since it uses less digits than its factorization.

1390275137655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245600 (or 245594 counting only the distinct ones).

The product of its (nonzero) digits is 5953500, while the sum is 54.

The spelling of 1390275137655 in words is "one trillion, three hundred ninety billion, two hundred seventy-five million, one hundred thirty-seven thousand, six hundred fifty-five".