402345523450 has 48 divisors (see below), whose sum is σ = 825585893496. Its totient is φ = 144934963200.

The previous prime is 402345523387. The next prime is 402345523483. The reversal of 402345523450 is 54325543204.

It can be written as a sum of positive squares in 12 ways, for example, as 113152177161 + 289193346289 = 336381^2 + 537767^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7522047 + ... + 7575346.

Almost surely, 2^402345523450 is an apocalyptic number.

402345523450 is an abundant number, since it is smaller than the sum of its proper divisors (423240370046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402345523450 is a wasteful number, since it uses less digits than its factorization.

402345523450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15097459 (or 15097454 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 37.

The spelling of 402345523450 in words is "four hundred two billion, three hundred forty-five million, five hundred twenty-three thousand, four hundred fifty".