1523720707213 has 8 divisors (see below), whose sum is σ = 1537729196960. Its totient is φ = 1509712752240.

The previous prime is 1523720707199. The next prime is 1523720707253. The reversal of 1523720707213 is 3127070273251.

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 1523720707213 - 2³³ = 1515130772621 is a prime.

It is a super-3 number, since 3×1523720707213³ (a number of 38 digits) contains 333 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 (1523720707253) 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, 7678858 + ... + 7874788.

It is an arithmetic number, because the mean of its divisors is an integer number (192216149620).

Almost surely, 2^{1523720707213} is an apocalyptic number.

It is an amenable number.

1523720707213 is a deficient number, since it is larger than the sum of its proper divisors (14008489747).

1523720707213 is a wasteful number, since it uses less digits than its factorization.

1523720707213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267387.

The product of its (nonzero) digits is 123480, while the sum is 40.

The spelling of 1523720707213 in words is "one trillion, five hundred twenty-three billion, seven hundred twenty million, seven hundred seven thousand, two hundred thirteen".