245090699776 has 80 divisors (see below), whose sum is σ = 529252953768. Its totient is φ = 112715366400.

The previous prime is 245090699761. The next prime is 245090699783. The reversal of 245090699776 is 677996090542.

It can be written as a sum of positive squares in 4 ways, for example, as 111556000000 + 133534699776 = 334000^2 + 365424^2 .

It is a super-2 number, since 2×245090699776² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1804816 + ... + 1935856.

Almost surely, 2^245090699776 is an apocalyptic number.

245090699776 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245090699776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264626476884).

245090699776 is an abundant number, since it is smaller than the sum of its proper divisors (284162253992).

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

245090699776 is a wasteful number, since it uses less digits than its factorization.

245090699776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131353 (or 131337 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 245090699776 in words is "two hundred forty-five billion, ninety million, six hundred ninety-nine thousand, seven hundred seventy-six".