133920538515 has 32 divisors (see below), whose sum is σ = 238477243200. Its totient is φ = 71305401600.

The previous prime is 133920538471. The next prime is 133920538519. The reversal of 133920538515 is 515835029331.

133920538515 is a `hidden beast` number, since 13 + 3 + 92 + 0 + 5 + 38 + 515 = 666.

It is not a de Polignac number, because 133920538515 - 2⁷ = 133920538387 is a prime.

It is a super-2 number, since 2×133920538515² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (133920538519) 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, 744160 + ... + 906429.

It is an arithmetic number, because the mean of its divisors is an integer number (7452413850).

Almost surely, 2^133920538515 is an apocalyptic number.

133920538515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133920538515 is a deficient number, since it is larger than the sum of its proper divisors (104556704685).

133920538515 is a wasteful number, since it uses less digits than its factorization.

133920538515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651204 (or 1651198 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 133920538515 in words is "one hundred thirty-three billion, nine hundred twenty million, five hundred thirty-eight thousand, five hundred fifteen".