2101505297654 has 32 divisors (see below), whose sum is σ = 3621790402560. Its totient is φ = 895844986848.

The previous prime is 2101505297629. The next prime is 2101505297669. The reversal of 2101505297654 is 4567925051012.

It is a junction number, because it is equal to n+sod(n) for n = 2101505297599 and 2101505297608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10956227 + ... + 11146385.

It is an arithmetic number, because the mean of its divisors is an integer number (113180950080).

Almost surely, 2^{2101505297654} is an apocalyptic number.

2101505297654 is a deficient number, since it is larger than the sum of its proper divisors (1520285104906).

2101505297654 is a wasteful number, since it uses less digits than its factorization.

2101505297654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194372.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 2101505297654 in words is "two trillion, one hundred one billion, five hundred five million, two hundred ninety-seven thousand, six hundred fifty-four".