154215091892 has 12 divisors (see below), whose sum is σ = 269884391616. Its totient is φ = 77105265720.

The previous prime is 154215091883. The next prime is 154215091963. The reversal of 154215091892 is 298190512451.

154215091892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413084 + ... + 692147.

It is an arithmetic number, because the mean of its divisors is an integer number (22490365968).

Almost surely, 2^154215091892 is an apocalyptic number.

It is an amenable number.

154215091892 is a deficient number, since it is larger than the sum of its proper divisors (115669299724).

154215091892 is a wasteful number, since it uses less digits than its factorization.

154215091892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140118 (or 1140116 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 47.

The spelling of 154215091892 in words is "one hundred fifty-four billion, two hundred fifteen million, ninety-one thousand, eight hundred ninety-two".