261374272998 has 64 divisors (see below), whose sum is σ = 555310812672. Its totient is φ = 81847434240.

The previous prime is 261374272997. The next prime is 261374273009. The reversal of 261374272998 is 899272473162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261374272997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1679040 + ... + 1828092.

It is an arithmetic number, because the mean of its divisors is an integer number (8676731448).

Almost surely, 2^261374272998 is an apocalyptic number.

261374272998 is an abundant number, since it is smaller than the sum of its proper divisors (293936539674).

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

261374272998 is a wasteful number, since it uses less digits than its factorization.

261374272998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149309.

The product of its digits is 18289152, while the sum is 60.

The spelling of 261374272998 in words is "two hundred sixty-one billion, three hundred seventy-four million, two hundred seventy-two thousand, nine hundred ninety-eight".