1511253640442 has 64 divisors (see below), whose sum is σ = 2886659596800. Its totient is φ = 577153624320.

The previous prime is 1511253640387. The next prime is 1511253640459. The reversal of 1511253640442 is 2440463521151.

It is a junction number, because it is equal to n+sod(n) for n = 1511253640396 and 1511253640405.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41567192 + ... + 41603532.

It is an arithmetic number, because the mean of its divisors is an integer number (45104056200).

Almost surely, 2^{1511253640442} is an apocalyptic number.

1511253640442 is a deficient number, since it is larger than the sum of its proper divisors (1375405956358).

1511253640442 is a wasteful number, since it uses less digits than its factorization.

1511253640442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44271.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 1511253640442 in words is "one trillion, five hundred eleven billion, two hundred fifty-three million, six hundred forty thousand, four hundred forty-two".