51505650270 has 48 divisors (see below), whose sum is σ = 133933849920. Its totient is φ = 13732875072.

The previous prime is 51505650241. The next prime is 51505650299. The reversal of 51505650270 is 7205650515.

It is a happy number.

51505650270 is a `hidden beast` number, since 51 + 50 + 56 + 502 + 7 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (51505650241) and next prime (51505650299).

It is a congruent number.

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, 657451 + ... + 731609.

It is an arithmetic number, because the mean of its divisors is an integer number (2790288540).

Almost surely, 2^51505650270 is an apocalyptic number.

51505650270 is an abundant number, since it is smaller than the sum of its proper divisors (82428199650).

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

51505650270 is a wasteful number, since it uses less digits than its factorization.

51505650270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81889 (or 81886 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The spelling of 51505650270 in words is "fifty-one billion, five hundred five million, six hundred fifty thousand, two hundred seventy".