7490252782981 has 8 divisors (see below), whose sum is σ = 7577710657560. Its totient is φ = 7402868191488.

The previous prime is 7490252782973. The next prime is 7490252783009. The reversal of 7490252782981 is 1892872520947.

It can be written as a sum of positive squares in 4 ways, for example, as 608072444100 + 6882180338881 = 779790^2 + 2623391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7490252782981 - 2³ = 7490252782973 is a prime.

It is a super-2 number, since 2×7490252782981² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7490252782921) 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, 18115146 + ... + 18524011.

It is an arithmetic number, because the mean of its divisors is an integer number (947213832195).

Almost surely, 2^{7490252782981} is an apocalyptic number.

It is an amenable number.

7490252782981 is a deficient number, since it is larger than the sum of its proper divisors (87457874579).

7490252782981 is a wasteful number, since it uses less digits than its factorization.

7490252782981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36641543.

The product of its (nonzero) digits is 40642560, while the sum is 64.

The spelling of 7490252782981 in words is "seven trillion, four hundred ninety billion, two hundred fifty-two million, seven hundred eighty-two thousand, nine hundred eighty-one".