11137767421 has 32 divisors (see below), whose sum is σ = 12693542400. Its totient is φ = 9683782080.

The previous prime is 11137767409. The next prime is 11137767449. The reversal of 11137767421 is 12476773111.

It is a cyclic number.

It is not a de Polignac number, because 11137767421 - 2¹³ = 11137759229 is a prime.

It is a super-6 number, since 6×11137767421⁶ (a number of 62 digits) contains 666666 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11137767401) 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, 8845890 + ... + 8847148.

It is an arithmetic number, because the mean of its divisors is an integer number (396673200).

Almost surely, 2^11137767421 is an apocalyptic number.

11137767421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11137767421 is a deficient number, since it is larger than the sum of its proper divisors (1555774979).

11137767421 is a wasteful number, since it uses less digits than its factorization.

11137767421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689.

The product of its digits is 49392, while the sum is 40.

The spelling of 11137767421 in words is "eleven billion, one hundred thirty-seven million, seven hundred sixty-seven thousand, four hundred twenty-one".