26166997450 has 96 divisors (see below), whose sum is σ = 54824491008. Its totient is φ = 9209088000.

The previous prime is 26166997433. The next prime is 26166997471. The reversal of 26166997450 is 5479966162.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 26166997391 and 26166997400.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2859282 + ... + 2868418.

It is an arithmetic number, because the mean of its divisors is an integer number (571088448).

Almost surely, 2^26166997450 is an apocalyptic number.

26166997450 is an abundant number, since it is smaller than the sum of its proper divisors (28657493558).

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

26166997450 is a wasteful number, since it uses less digits than its factorization.

26166997450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328 (or 9323 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 26166997450 in words is "twenty-six billion, one hundred sixty-six million, nine hundred ninety-seven thousand, four hundred fifty".