2545136269378 has 8 divisors (see below), whose sum is σ = 3821473118268. Its totient is φ = 1271311896624.

The previous prime is 2545136269369. The next prime is 2545136269469. The reversal of 2545136269378 is 8739626315452.

It can be written as a sum of positive squares in 2 ways, for example, as 2407099499289 + 138036770089 = 1551483^2 + 371533^2 .

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, 628116501 + ... + 628120552.

Almost surely, 2^{2545136269378} is an apocalyptic number.

2545136269378 is a deficient number, since it is larger than the sum of its proper divisors (1276336848890).

2545136269378 is a wasteful number, since it uses less digits than its factorization.

2545136269378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256238068.

The product of its digits is 65318400, while the sum is 61.

The spelling of 2545136269378 in words is "two trillion, five hundred forty-five billion, one hundred thirty-six million, two hundred sixty-nine thousand, three hundred seventy-eight".