7451247998402 has 16 divisors (see below), whose sum is σ = 12065221973112. Its totient is φ = 3430868797440.

The previous prime is 7451247998351. The next prime is 7451247998407. The reversal of 7451247998402 is 2048997421547.

It can be written as a sum of positive squares in 4 ways, for example, as 3124519352161 + 4326728646241 = 1767631^2 + 2080079^2 .

It is a super-2 number, since 2×7451247998402² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7451247998407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340353023 + ... + 340374914.

Almost surely, 2^{7451247998402} is an apocalyptic number.

7451247998402 is a deficient number, since it is larger than the sum of its proper divisors (4613973974710).

7451247998402 is a wasteful number, since it uses less digits than its factorization.

7451247998402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680728373.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 7451247998402 in words is "seven trillion, four hundred fifty-one billion, two hundred forty-seven million, nine hundred ninety-eight thousand, four hundred two".