28135152464 has 10 divisors (see below), whose sum is σ = 54511857930. Its totient is φ = 14067576224.

The previous prime is 28135152379. The next prime is 28135152467. The reversal of 28135152464 is 46425153182.

It can be written as a sum of positive squares in only one way, i.e., 27835585600 + 299566864 = 166840^2 + 17308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135152467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 879223499 + ... + 879223530.

It is an arithmetic number, because the mean of its divisors is an integer number (5451185793).

Almost surely, 2^28135152464 is an apocalyptic number.

It is an amenable number.

28135152464 is a deficient number, since it is larger than the sum of its proper divisors (26376705466).

28135152464 is a wasteful number, since it uses less digits than its factorization.

28135152464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758447037 (or 1758447031 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The spelling of 28135152464 in words is "twenty-eight billion, one hundred thirty-five million, one hundred fifty-two thousand, four hundred sixty-four".