27752121345 has 32 divisors (see below), whose sum is σ = 47848977792. Its totient is φ = 13654029312.

The previous prime is 27752121337. The next prime is 27752121409. The reversal of 27752121345 is 54312125772.

It is not a de Polignac number, because 27752121345 - 2³ = 27752121337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 273529 + ... + 361001.

It is an arithmetic number, because the mean of its divisors is an integer number (1495280556).

Almost surely, 2^27752121345 is an apocalyptic number.

It is an amenable number.

27752121345 is a deficient number, since it is larger than the sum of its proper divisors (20096856447).

27752121345 is a wasteful number, since it uses less digits than its factorization.

27752121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89121.

The product of its digits is 117600, while the sum is 39.

The spelling of 27752121345 in words is "twenty-seven billion, seven hundred fifty-two million, one hundred twenty-one thousand, three hundred forty-five".