15745829397 has 32 divisors (see below), whose sum is σ = 22678656000. Its totient is φ = 9685412352.

The previous prime is 15745829387. The next prime is 15745829423. The reversal of 15745829397 is 79392854751.

It is a happy number.

It is not a de Polignac number, because 15745829397 - 2⁴ = 15745829381 is a prime.

It is a super-2 number, since 2×15745829397² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15745829397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15745829347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856104 + ... + 874302.

It is an arithmetic number, because the mean of its divisors is an integer number (708708000).

Almost surely, 2^15745829397 is an apocalyptic number.

It is an amenable number.

15745829397 is a deficient number, since it is larger than the sum of its proper divisors (6932826603).

15745829397 is a wasteful number, since it uses less digits than its factorization.

15745829397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18617.

The product of its digits is 19051200, while the sum is 60.

The spelling of 15745829397 in words is "fifteen billion, seven hundred forty-five million, eight hundred twenty-nine thousand, three hundred ninety-seven".