1972879287747 has 8 divisors (see below), whose sum is σ = 2701600466256. Its totient is φ = 1279705483872.

The previous prime is 1972879287737. The next prime is 1972879287763. The reversal of 1972879287747 is 7477829782791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1972879287747 - 2¹⁶ = 1972879222211 is a prime.

It is a super-2 number, since 2×1972879287747² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1972879287727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8886843528 + ... + 8886843749.

It is an arithmetic number, because the mean of its divisors is an integer number (337700058282).

Almost surely, 2^{1972879287747} is an apocalyptic number.

1972879287747 is a deficient number, since it is larger than the sum of its proper divisors (728721178509).

1972879287747 is a wasteful number, since it uses less digits than its factorization.

1972879287747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17773687317.

The product of its digits is 1394039808, while the sum is 78.

The spelling of 1972879287747 in words is "one trillion, nine hundred seventy-two billion, eight hundred seventy-nine million, two hundred eighty-seven thousand, seven hundred forty-seven".