402261251759 has 4 divisors (see below), whose sum is σ = 403571549304. Its totient is φ = 400950954216.

The previous prime is 402261251747. The next prime is 402261251761. The reversal of 402261251759 is 957152162204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402261251759 is a prime.

It is a super-2 number, since 2×402261251759² (a number of 24 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 (402261251779) 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, 655148312 + ... + 655148925.

It is an arithmetic number, because the mean of its divisors is an integer number (100892887326).

Almost surely, 2^402261251759 is an apocalyptic number.

402261251759 is a deficient number, since it is larger than the sum of its proper divisors (1310297545).

402261251759 is a wasteful number, since it uses less digits than its factorization.

402261251759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310297544.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 402261251759 in words is "four hundred two billion, two hundred sixty-one million, two hundred fifty-one thousand, seven hundred fifty-nine".