40621992451 has 2 divisors, whose sum is σ = 40621992452. Its totient is φ = 40621992450.

The previous prime is 40621992373. The next prime is 40621992487. The reversal of 40621992451 is 15429912604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40621992451 - 2²⁹ = 40085121539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40621992398 and 40621992407.

It is not a weakly prime, because it can be changed into another prime (40621942451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20310996225 + 20310996226.

It is an arithmetic number, because the mean of its divisors is an integer number (20310996226).

Almost surely, 2^40621992451 is an apocalyptic number.

40621992451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40621992451 is an equidigital number, since it uses as much as digits as its factorization.

40621992451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 40621992451 in words is "forty billion, six hundred twenty-one million, nine hundred ninety-two thousand, four hundred fifty-one".