9972777451 has 16 divisors (see below), whose sum is σ = 12559638784. Its totient is φ = 7707045024.

The previous prime is 9972777403. The next prime is 9972777467. The reversal of 9972777451 is 1547772799.

It is a happy number.

It is not a de Polignac number, because 9972777451 - 2¹³ = 9972769259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9972777481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270401 + ... + 1278226.

It is an arithmetic number, because the mean of its divisors is an integer number (784977424).

Almost surely, 2^9972777451 is an apocalyptic number.

9972777451 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9972777451 is a deficient number, since it is larger than the sum of its proper divisors (2586861333).

9972777451 is a wasteful number, since it uses less digits than its factorization.

9972777451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548690.

The product of its digits is 7779240, while the sum is 58.

The square root of 9972777451 is about 99863.7944953025. The cubic root of 9972777451 is about 2152.4779399015.

The spelling of 9972777451 in words is "nine billion, nine hundred seventy-two million, seven hundred seventy-seven thousand, four hundred fifty-one".