914992771440 has 160 divisors (see below), whose sum is σ = 3094970052096. Its totient is φ = 221771207680.

The previous prime is 914992771409. The next prime is 914992771447. The reversal of 914992771440 is 44177299419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (914992771447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13967242 + ... + 14032598.

Almost surely, 2^914992771440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 914992771440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1547485026048).

914992771440 is an abundant number, since it is smaller than the sum of its proper divisors (2179977280656).

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

914992771440 is a wasteful number, since it uses less digits than its factorization.

914992771440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70687 (or 70681 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 914992771440 in words is "nine hundred fourteen billion, nine hundred ninety-two million, seven hundred seventy-one thousand, four hundred forty".