1375613520731 has 8 divisors (see below), whose sum is σ = 1420015872384. Its totient is φ = 1331212901760.

The previous prime is 1375613520727. The next prime is 1375613520733. The reversal of 1375613520731 is 1370253165731.

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 1375613520731 - 2² = 1375613520727 is a prime.

It is a super-3 number, since 3×1375613520731³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375613520733) 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, 1289045 + ... + 2100681.

It is an arithmetic number, because the mean of its divisors is an integer number (177501984048).

Almost surely, 2^{1375613520731} is an apocalyptic number.

1375613520731 is a deficient number, since it is larger than the sum of its proper divisors (44402351653).

1375613520731 is an equidigital number, since it uses as much as digits as its factorization.

1375613520731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866341.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 1375613520731 in words is "one trillion, three hundred seventy-five billion, six hundred thirteen million, five hundred twenty thousand, seven hundred thirty-one".