1915501500642 has 16 divisors (see below), whose sum is σ = 3835569165120. Its totient is φ = 637739472912.

The previous prime is 1915501500641. The next prime is 1915501500701. The reversal of 1915501500642 is 2460051055191.

It is a self number, because there is not a number n which added to its sum of digits gives 1915501500642.

It is not an unprimeable number, because it can be changed into a prime (1915501500641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190251373 + ... + 190261440.

It is an arithmetic number, because the mean of its divisors is an integer number (239723072820).

Almost surely, 2^{1915501500642} is an apocalyptic number.

1915501500642 is an abundant number, since it is smaller than the sum of its proper divisors (1920067664478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1915501500642 is a wasteful number, since it uses less digits than its factorization.

1915501500642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380513657.

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 1915501500642 in words is "one trillion, nine hundred fifteen billion, five hundred one million, five hundred thousand, six hundred forty-two".