21140165225354 has 32 divisors (see below), whose sum is σ = 36273352628736. Its totient is φ = 9051807089520.

The previous prime is 21140165225341. The next prime is 21140165225371. The reversal of 21140165225354 is 45352256104112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70918529 + ... + 71215995.

It is an arithmetic number, because the mean of its divisors is an integer number (1133542269648).

Almost surely, 2^{21140165225354} is an apocalyptic number.

21140165225354 is a deficient number, since it is larger than the sum of its proper divisors (15133187403382).

21140165225354 is a wasteful number, since it uses less digits than its factorization.

21140165225354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302090.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 21140165225354 in words is "twenty-one trillion, one hundred forty billion, one hundred sixty-five million, two hundred twenty-five thousand, three hundred fifty-four".