7378406734257 has 32 divisors (see below), whose sum is σ = 11839862294400. Its totient is φ = 4514311953216.

The previous prime is 7378406734189. The next prime is 7378406734277. The reversal of 7378406734257 is 7524376048737.

7378406734257 is a `hidden beast` number, since 7 + 3 + 78 + 406 + 73 + 42 + 57 = 666.

It is not a de Polignac number, because 7378406734257 - 2¹⁰ = 7378406733233 is a prime.

It is a super-2 number, since 2×7378406734257² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7378406734194 and 7378406734203.

It is not an unprimeable number, because it can be changed into a prime (7378406734277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60693907 + ... + 60815352.

It is an arithmetic number, because the mean of its divisors is an integer number (369995696700).

Almost surely, 2^{7378406734257} is an apocalyptic number.

It is an amenable number.

7378406734257 is a deficient number, since it is larger than the sum of its proper divisors (4461455560143).

7378406734257 is a wasteful number, since it uses less digits than its factorization.

7378406734257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121509454 (or 121509448 counting only the distinct ones).

The product of its (nonzero) digits is 165957120, while the sum is 63.

The spelling of 7378406734257 in words is "seven trillion, three hundred seventy-eight billion, four hundred six million, seven hundred thirty-four thousand, two hundred fifty-seven".