2001505100542 has 4 divisors (see below), whose sum is σ = 3002257650816. Its totient is φ = 1000752550270.

The previous prime is 2001505100531. The next prime is 2001505100561. The reversal of 2001505100542 is 2450015051002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500376275134 + ... + 500376275137.

It is an arithmetic number, because the mean of its divisors is an integer number (750564412704).

Almost surely, 2^{2001505100542} is an apocalyptic number.

2001505100542 is a deficient number, since it is larger than the sum of its proper divisors (1000752550274).

2001505100542 is a wasteful number, since it uses less digits than its factorization.

2001505100542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000752550273.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 2001505100542 in words is "two trillion, one billion, five hundred five million, one hundred thousand, five hundred forty-two".