40303397903290 has 16 divisors (see below), whose sum is σ = 72568390191912. Its totient is φ = 16116409391104.

The previous prime is 40303397903231. The next prime is 40303397903291. The reversal of 40303397903290 is 9230979330304.

It can be written as a sum of positive squares in 4 ways, for example, as 35646619489441 + 4656778413849 = 5970479^2 + 2157957^2 .

It is not an unprimeable number, because it can be changed into a prime (40303397903291) 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, 618687079 + ... + 618752218.

Almost surely, 2^{40303397903290} is an apocalyptic number.

40303397903290 is a deficient number, since it is larger than the sum of its proper divisors (32264992288622).

40303397903290 is a wasteful number, since it uses less digits than its factorization.

40303397903290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237442561.

The product of its (nonzero) digits is 3306744, while the sum is 52.

The spelling of 40303397903290 in words is "forty trillion, three hundred three billion, three hundred ninety-seven million, nine hundred three thousand, two hundred ninety".