20254656342 has 32 divisors (see below), whose sum is σ = 40752149760. Its totient is φ = 6711188000.

The previous prime is 20254656319. The next prime is 20254656361. The reversal of 20254656342 is 24365645202.

It is a super-2 number, since 2×20254656342² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20254656342.

It is a congruent 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, 753343 + ... + 779765.

It is an arithmetic number, because the mean of its divisors is an integer number (1273504680).

Almost surely, 2^20254656342 is an apocalyptic number.

20254656342 is an abundant number, since it is smaller than the sum of its proper divisors (20497493418).

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

20254656342 is a wasteful number, since it uses less digits than its factorization.

20254656342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27188.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 20254656342 in words is "twenty billion, two hundred fifty-four million, six hundred fifty-six thousand, three hundred forty-two".