145406653515 has 48 divisors (see below), whose sum is σ = 261878292000. Its totient is φ = 74546067456.

The previous prime is 145406653493. The next prime is 145406653519. The reversal of 145406653515 is 515356604541.

145406653515 is a `hidden beast` number, since 1 + 4 + 5 + 40 + 66 + 535 + 15 = 666.

It is not a de Polignac number, because 145406653515 - 2¹² = 145406649419 is a prime.

It is a super-2 number, since 2×145406653515² (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 (145406653519) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50811 + ... + 541659.

It is an arithmetic number, because the mean of its divisors is an integer number (5455797750).

Almost surely, 2^145406653515 is an apocalyptic number.

145406653515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145406653515 is a deficient number, since it is larger than the sum of its proper divisors (116471638485).

145406653515 is a wasteful number, since it uses less digits than its factorization.

145406653515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491116 (or 491113 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 145406653515 in words is "one hundred forty-five billion, four hundred six million, six hundred fifty-three thousand, five hundred fifteen".