7474047439091 has 2 divisors, whose sum is σ = 7474047439092. Its totient is φ = 7474047439090.

The previous prime is 7474047439051. The next prime is 7474047439123. The reversal of 7474047439091 is 1909347404747.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7474047439091 is a prime.

It is a super-2 number, since 2×7474047439091² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7474047439091.

It is not a weakly prime, because it can be changed into another prime (7474047439021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737023719545 + 3737023719546.

It is an arithmetic number, because the mean of its divisors is an integer number (3737023719546).

Almost surely, 2^{7474047439091} is an apocalyptic number.

7474047439091 is a deficient number, since it is larger than the sum of its proper divisors (1).

7474047439091 is an equidigital number, since it uses as much as digits as its factorization.

7474047439091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 59.

The spelling of 7474047439091 in words is "seven trillion, four hundred seventy-four billion, forty-seven million, four hundred thirty-nine thousand, ninety-one".