1390376021761 has 8 divisors (see below), whose sum is σ = 1394954646624. Its totient is φ = 1385797720320.

The previous prime is 1390376021747. The next prime is 1390376021777. The reversal of 1390376021761 is 1671206730931.

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 1390376021761 - 2²¹ = 1390373924609 is a prime.

It is a super-2 number, since 2×1390376021761² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390376021791) 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, 11038806 + ... + 11164048.

It is an arithmetic number, because the mean of its divisors is an integer number (174369330828).

Almost surely, 2^{1390376021761} is an apocalyptic number.

It is an amenable number.

1390376021761 is a deficient number, since it is larger than the sum of its proper divisors (4578624863).

1390376021761 is a wasteful number, since it uses less digits than its factorization.

1390376021761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161711.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 1390376021761 in words is "one trillion, three hundred ninety billion, three hundred seventy-six million, twenty-one thousand, seven hundred sixty-one".