50297043690 has 64 divisors (see below), whose sum is σ = 134389324800. Its totient is φ = 13386157632.

The previous prime is 50297043647. The next prime is 50297043733. The reversal of 50297043690 is 9634079205.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (50297043647) and next prime (50297043733).

It is a super-2 number, since 2×50297043690² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45562 + ... + 320421.

It is an arithmetic number, because the mean of its divisors is an integer number (2099833200).

Almost surely, 2^50297043690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50297043690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67194662400).

50297043690 is an abundant number, since it is smaller than the sum of its proper divisors (84092281110).

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

50297043690 is a wasteful number, since it uses less digits than its factorization.

50297043690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366508 (or 366502 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 50297043690 in words is "fifty billion, two hundred ninety-seven million, forty-three thousand, six hundred ninety".