1656143222734 has 32 divisors (see below), whose sum is σ = 3335449291776. Its totient is φ = 595615943520.

The previous prime is 1656143222731. The next prime is 1656143222749. The reversal of 1656143222734 is 4372223416561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656143222731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413620182 + ... + 413624185.

It is an arithmetic number, because the mean of its divisors is an integer number (104232790368).

Almost surely, 2^{1656143222734} is an apocalyptic number.

1656143222734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1656143222734 is an abundant number, since it is smaller than the sum of its proper divisors (1679306069042).

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

1656143222734 is a wasteful number, since it uses less digits than its factorization.

1656143222734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827244400.

The product of its digits is 1451520, while the sum is 46.

The spelling of 1656143222734 in words is "one trillion, six hundred fifty-six billion, one hundred forty-three million, two hundred twenty-two thousand, seven hundred thirty-four".