7552400720840 has 64 divisors (see below), whose sum is σ = 17108135550000. Its totient is φ = 3000477076480.

The previous prime is 7552400720803. The next prime is 7552400720897. The reversal of 7552400720840 is 480270042557.

It can be written as a sum of positive squares in 8 ways, for example, as 171974431204 + 7380426289636 = 414698^2 + 2716694^2 .

It is a super-2 number, since 2×7552400720840² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7552400720791 and 7552400720800.

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, 108133130 + ... + 108202950.

Almost surely, 2^{7552400720840} is an apocalyptic number.

It is an amenable number.

7552400720840 is an abundant number, since it is smaller than the sum of its proper divisors (9555734829160).

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

7552400720840 is a wasteful number, since it uses less digits than its factorization.

7552400720840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88130 (or 88126 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 44.

The spelling of 7552400720840 in words is "seven trillion, five hundred fifty-two billion, four hundred million, seven hundred twenty thousand, eight hundred forty".