145696521015 has 32 divisors (see below), whose sum is σ = 259125393600. Its totient is φ = 77672004480.

The previous prime is 145696521011. The next prime is 145696521121. The reversal of 145696521015 is 510125696541.

145696521015 is a `hidden beast` number, since 1 + 4 + 569 + 65 + 2 + 10 + 15 = 666.

It is not a de Polignac number, because 145696521015 - 2² = 145696521011 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145696521011) 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, 94801 + ... + 548069.

It is an arithmetic number, because the mean of its divisors is an integer number (8097668550).

Almost surely, 2^145696521015 is an apocalyptic number.

145696521015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145696521015 is a deficient number, since it is larger than the sum of its proper divisors (113428872585).

145696521015 is a wasteful number, since it uses less digits than its factorization.

145696521015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455664 (or 455658 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 145696521015 in words is "one hundred forty-five billion, six hundred ninety-six million, five hundred twenty-one thousand, fifteen".