51145017202 has 8 divisors (see below), whose sum is σ = 77768451036. Its totient is φ = 25222200192.

The previous prime is 51145017181. The next prime is 51145017221. The reversal of 51145017202 is 20271054115.

It can be written as a sum of positive squares in 2 ways, for example, as 44770751281 + 6374265921 = 211591^2 + 79839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175154023 + ... + 175154314.

Almost surely, 2^51145017202 is an apocalyptic number.

51145017202 is a deficient number, since it is larger than the sum of its proper divisors (26623433834).

51145017202 is a wasteful number, since it uses less digits than its factorization.

51145017202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350308412.

The product of its (nonzero) digits is 2800, while the sum is 28.

The spelling of 51145017202 in words is "fifty-one billion, one hundred forty-five million, seventeen thousand, two hundred two".