2351402343440 has 40 divisors (see below), whose sum is σ = 5469439570368. Its totient is φ = 940143024000.

The previous prime is 2351402343427. The next prime is 2351402343467. The reversal of 2351402343440 is 443432041532.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2351402343440² (a number of 26 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 2351402343440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6348692 + ... + 6708851.

Almost surely, 2^{2351402343440} is an apocalyptic number.

2351402343440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2351402343440 is an abundant number, since it is smaller than the sum of its proper divisors (3118037226928).

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

2351402343440 is a wasteful number, since it uses less digits than its factorization.

2351402343440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13059807 (or 13059801 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 2351402343440 its reverse (443432041532), we get a palindrome (2794834384972).

The spelling of 2351402343440 in words is "two trillion, three hundred fifty-one billion, four hundred two million, three hundred forty-three thousand, four hundred forty".