7491338158440 has 64 divisors (see below), whose sum is σ = 23022161184960. Its totient is φ = 1948966023680.

The previous prime is 7491338158411. The next prime is 7491338158457. The reversal of 7491338158440 is 448518331947.

It is a super-2 number, since 2×7491338158440² (a number of 27 digits) contains 22 as substring.

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, 761309934 + ... + 761319773.

It is an arithmetic number, because the mean of its divisors is an integer number (359721268515).

Almost surely, 2^{7491338158440} is an apocalyptic number.

It is an amenable number.

7491338158440 is an abundant number, since it is smaller than the sum of its proper divisors (15530823026520).

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

7491338158440 is a wasteful number, since it uses less digits than its factorization.

7491338158440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522629762 (or 1522629758 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 7491338158440 in words is "seven trillion, four hundred ninety-one billion, three hundred thirty-eight million, one hundred fifty-eight thousand, four hundred forty".