6242471781 has 32 divisors (see below), whose sum is σ = 10290094080. Its totient is φ = 3277934784.

The previous prime is 6242471771. The next prime is 6242471797. The reversal of 6242471781 is 1871742426.

It is not a de Polignac number, because 6242471781 - 2¹⁹ = 6241947493 is a prime.

It is a super-2 number, since 2×6242471781² = 77936907873162623922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6242471701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9610 + ... + 112148.

It is an arithmetic number, because the mean of its divisors is an integer number (321565440).

Almost surely, 2^6242471781 is an apocalyptic number.

It is an amenable number.

6242471781 is a deficient number, since it is larger than the sum of its proper divisors (4047622299).

6242471781 is a wasteful number, since it uses less digits than its factorization.

6242471781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102785.

The product of its digits is 150528, while the sum is 42.

The square root of 6242471781 is about 79009.3145205045. The cubic root of 6242471781 is about 1841.2758736188.

The spelling of 6242471781 in words is "six billion, two hundred forty-two million, four hundred seventy-one thousand, seven hundred eighty-one".