2514644330640 has 160 divisors (see below), whose sum is σ = 8412286745856. Its totient is φ = 617717975040.

The previous prime is 2514644330633. The next prime is 2514644330641. The reversal of 2514644330640 is 460334464152.

It is a super-2 number, since 2×2514644330640² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2514644330592 and 2514644330601.

It is not an unprimeable number, because it can be changed into a prime (2514644330641) 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, 691950 + ... + 2346930.

Almost surely, 2^{2514644330640} is an apocalyptic number.

2514644330640 is a gapful number since it is divisible by the number (20) 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 2514644330640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4206143372928).

2514644330640 is an abundant number, since it is smaller than the sum of its proper divisors (5897642415216).

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

2514644330640 is a wasteful number, since it uses less digits than its factorization.

2514644330640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655497 (or 1655491 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 2514644330640 its reverse (460334464152), we get a palindrome (2974978794792).

The spelling of 2514644330640 in words is "two trillion, five hundred fourteen billion, six hundred forty-four million, three hundred thirty thousand, six hundred forty".