98400977261 has 4 divisors (see below), whose sum is σ = 98402809692. Its totient is φ = 98399144832.

The previous prime is 98400977159. The next prime is 98400977267. The reversal of 98400977261 is 16277900489.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87163705225 + 11237272036 = 295235^2 + 106006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98400977261 is a prime.

It is a super-3 number, since 3×98400977261³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98400977267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833156 + ... + 943901.

It is an arithmetic number, because the mean of its divisors is an integer number (24600702423).

Almost surely, 2^98400977261 is an apocalyptic number.

It is an amenable number.

98400977261 is a deficient number, since it is larger than the sum of its proper divisors (1832431).

98400977261 is a wasteful number, since it uses less digits than its factorization.

98400977261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832430.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 98400977261 in words is "ninety-eight billion, four hundred million, nine hundred seventy-seven thousand, two hundred sixty-one".