7421287262861 has 4 divisors (see below), whose sum is σ = 7547071792800. Its totient is φ = 7295502732924.

The previous prime is 7421287262833. The next prime is 7421287262927. The reversal of 7421287262861 is 1682627821247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7421287262861 - 2²² = 7421283068557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7421287262797 and 7421287262806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421287262161) 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, 62892264881 + ... + 62892264998.

It is an arithmetic number, because the mean of its divisors is an integer number (1886767948200).

Almost surely, 2^{7421287262861} is an apocalyptic number.

It is an amenable number.

7421287262861 is a deficient number, since it is larger than the sum of its proper divisors (125784529939).

7421287262861 is a wasteful number, since it uses less digits than its factorization.

7421287262861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125784529938.

The product of its digits is 7225344, while the sum is 56.

The spelling of 7421287262861 in words is "seven trillion, four hundred twenty-one billion, two hundred eighty-seven million, two hundred sixty-two thousand, eight hundred sixty-one".