40691290351 has 4 divisors (see below), whose sum is σ = 42460476912. Its totient is φ = 38922103792.

The previous prime is 40691290327. The next prime is 40691290361. The reversal of 40691290351 is 15309219604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40691290351 - 2⁵ = 40691290319 is a prime.

It is a super-2 number, since 2×40691290351² (a number of 22 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 (40691290361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884593246 + ... + 884593291.

It is an arithmetic number, because the mean of its divisors is an integer number (10615119228).

Almost surely, 2^40691290351 is an apocalyptic number.

40691290351 is a deficient number, since it is larger than the sum of its proper divisors (1769186561).

40691290351 is a wasteful number, since it uses less digits than its factorization.

40691290351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769186560.

The product of its (nonzero) digits is 58320, while the sum is 40.

It can be divided in two parts, 40691290 and 351, that added together give a square (40691641 = 6379²).

The spelling of 40691290351 in words is "forty billion, six hundred ninety-one million, two hundred ninety thousand, three hundred fifty-one".