1229951142896 has 80 divisors (see below), whose sum is σ = 2762942827008. Its totient is φ = 519529248000.

The previous prime is 1229951142877. The next prime is 1229951142923. The reversal of 1229951142896 is 6982411599221.

It is a super-2 number, since 2×1229951142896² (a number of 25 digits) contains 22 as substring.

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, 2181446 + ... + 2686746.

Almost surely, 2^{1229951142896} is an apocalyptic number.

1229951142896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1229951142896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381471413504).

1229951142896 is an abundant number, since it is smaller than the sum of its proper divisors (1532991684112).

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

1229951142896 is a wasteful number, since it uses less digits than its factorization.

1229951142896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505630 (or 505624 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 59.

The spelling of 1229951142896 in words is "one trillion, two hundred twenty-nine billion, nine hundred fifty-one million, one hundred forty-two thousand, eight hundred ninety-six".