1620040130115 has 64 divisors (see below), whose sum is σ = 2837648927232. Its totient is φ = 782715110400.

The previous prime is 1620040130113. The next prime is 1620040130141. The reversal of 1620040130115 is 5110310400261.

It is a happy number.

It is not a de Polignac number, because 1620040130115 - 2¹ = 1620040130113 is a prime.

It is a super-2 number, since 2×1620040130115² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1620040130113) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 100359945 + ... + 100376085.

It is an arithmetic number, because the mean of its divisors is an integer number (44338264488).

Almost surely, 2^{1620040130115} is an apocalyptic number.

1620040130115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1620040130115 is a deficient number, since it is larger than the sum of its proper divisors (1217608797117).

1620040130115 is a wasteful number, since it uses less digits than its factorization.

1620040130115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18260.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 1620040130115 its reverse (5110310400261), we get a palindrome (6730350530376).

The spelling of 1620040130115 in words is "one trillion, six hundred twenty billion, forty million, one hundred thirty thousand, one hundred fifteen".