512737491420 has 768 divisors, whose sum is σ = 2015843880960. Its totient is φ = 105106636800.

The previous prime is 512737491367. The next prime is 512737491433. The reversal of 512737491420 is 24194737215.

512737491420 is a `hidden beast` number, since 5 + 1 + 2 + 73 + 74 + 91 + 420 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1452513964 + ... + 1452514316.

It is an arithmetic number, because the mean of its divisors is an integer number (2624796720).

Almost surely, 2^512737491420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 512737491420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007921940480).

512737491420 is an abundant number, since it is smaller than the sum of its proper divisors (1503106389540).

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

512737491420 is a wasteful number, since it uses less digits than its factorization.

512737491420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 512737491420 in words is "five hundred twelve billion, seven hundred thirty-seven million, four hundred ninety-one thousand, four hundred twenty".